Ethereal-dev: [Ethereal-dev] 802.11 decode within LWAPP data frame

Note: This archive is from the project's previous web site, ethereal.com. This list is no longer active.

Date Prev · Date Next · Thread Prev · Thread Next
Date Index · Thread Index · Other Months · All Mailing Lists
From: Alain Hubert <ahubert@xxxxxxxxx>
Date: Thu, 29 Sep 2005 18:07:54 +0200 (CEST)
Hi,

Using ethereal 0.10.10, the 802.11 decode for 802.11 data frames enclosed
within LWAPP are not totally correct. (with swap control field set)

I noticed two minor errors:

- The RSSI/SNR in the AC->AP direction is the "WLAN identifier"
	Not sure if it is possible to distinguish it easely within
	the soft but obviously some packets can only come from the AC.

- Fragment/seq number are also wrongly decoded B0->B15 instead B15->B0
	
BTW, I don't believe there is any swap control field mis-interpretation
possibility. The point is that 
- B0-B1 = version
- B2-B3 = type ...

The same mistake appears with the fragment/seq number  where
we have B0-B3 = Frag number and B4-B15 =  Seq number while ethereal 0.10.10
now consider B15-B12 = frag number, B11-B0 - seq num.

Don't hesitate to correct me if I am wrong.

Thanks for your great tool,

Alain

Attachment: lwapp-data.cap
Description: lwapp-data.cap

No.     Time                       Source                Destination           Protocol Info
     10 2005-09-29 14:35:51.933609 100.0.253.3           10.48.74.126          IEEE 802.11 Probe Request

Frame 10 (72 bytes on wire, 72 bytes captured)
    Arrival Time: Sep 29, 2005 14:35:51.933609000
    Time delta from previous packet: 2.023549000 seconds
    Time since reference or first frame: 2.023549000 seconds
    Frame Number: 10
    Packet Length: 72 bytes
    Capture Length: 72 bytes
    Protocols in frame: eth:ip:udp:lwapp:wlan
Ethernet II, Src: 00:0b:85:24:e8:90, Dst: 00:0b:85:32:e4:05
    Destination: 00:0b:85:32:e4:05 (Airespac_32:e4:05)
    Source: 00:0b:85:24:e8:90 (10.48.74.126)
    Type: IP (0x0800)
Internet Protocol, Src Addr: 10.48.74.126 (10.48.74.126), Dst Addr: 10.48.73.246 (10.48.73.246)
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..0. = ECN-Capable Transport (ECT): 0
        .... ...0 = ECN-CE: 0
    Total Length: 58
    Identification: 0x0035 (53)
    Flags: 0x00
        0... = Reserved bit: Not set
        .0.. = Don't fragment: Not set
        ..0. = More fragments: Not set
    Fragment offset: 0
    Time to live: 127
    Protocol: UDP (0x11)
    Header checksum: 0x92aa (correct)
    Source: 10.48.74.126 (10.48.74.126)
    Destination: 10.48.73.246 (10.48.73.246)
User Datagram Protocol, Src Port: 20105 (20105), Dst Port: 12222 (12222)
    Source port: 20105 (20105)
    Destination port: 12222 (12222)
    Length: 38
    Checksum: 0x0000 (none)
LWAPP Encapsulated Packet
    Version: 0
    slotId: 1
    .... .0.. = Type: Encapsulated 80211
    .... ..0. = Fragment: Set
    .... ...0 = Fragment Type: Set
    Fragment Id: 0x1d
    Length: 24
    RSSI: 0xe3
    SNR: 0x42
IEEE 802.11
    Type/Subtype: Probe Request (4)
    Frame Control: 0x0040 (Swapped)
        Version: 0
        Type: Management frame (0)
        Subtype: 4
        Flags: 0x0
            DS status: Not leaving DS or network is operating in AD-HOC mode (To DS: 0  From DS: 0) (0x00)
            .... .0.. = More Fragments: This is the last fragment
            .... 0... = Retry: Frame is not being retransmitted
            ...0 .... = PWR MGT: STA will stay up
            ..0. .... = More Data: No data buffered
            .0.. .... = WEP flag: WEP is disabled
            0... .... = Order flag: Not strictly ordered
    Duration: 0
    Destination address: 00:0b:85:24:e8:90 (10.48.74.126)
    Source address: 00:02:8a:d8:de:9a (100.0.253.3)
    BSS Id: 00:0b:85:24:e8:90 (10.48.74.126)
    Fragment number: 3
    Sequence number: 261
IEEE 802.11 wireless LAN management frame
    Tagged parameters (0 bytes)

0000  00 0b 85 32 e4 05 00 0b 85 24 e8 90 08 00 45 00   ...2.....$....E.
0010  00 3a 00 35 00 00 7f 11 92 aa 0a 30 4a 7e 0a 30   .:.5.......0J~.0
0020  49 f6 4e 89 2f be 00 26 00 00 08 1d 00 18 e3 42   I.N./..&.......B
0030  00 40 00 00 00 0b 85 24 e8 90 00 02 8a d8 de 9a   .@.....$........
0040  00 0b 85 24 e8 90 53 10                           ...$..S.
No.     Time                       Source                Destination           Protocol Info
     11 2005-09-29 14:35:52.069158 100.0.253.3           10.48.74.126          IEEE 802.11 Association Request, SSID: "adgar-voice"

Frame 11 (112 bytes on wire, 112 bytes captured)
    Arrival Time: Sep 29, 2005 14:35:52.069158000
    Time delta from previous packet: 0.135549000 seconds
    Time since reference or first frame: 2.159098000 seconds
    Frame Number: 11
    Packet Length: 112 bytes
    Capture Length: 112 bytes
    Protocols in frame: eth:ip:udp:lwapp:wlan
Ethernet II, Src: 00:0b:85:24:e8:90, Dst: 00:0b:85:32:e4:05
    Destination: 00:0b:85:32:e4:05 (Airespac_32:e4:05)
    Source: 00:0b:85:24:e8:90 (10.48.74.126)
    Type: IP (0x0800)
Internet Protocol, Src Addr: 10.48.74.126 (10.48.74.126), Dst Addr: 10.48.73.246 (10.48.73.246)
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..0. = ECN-Capable Transport (ECT): 0
        .... ...0 = ECN-CE: 0
    Total Length: 98
    Identification: 0x0036 (54)
    Flags: 0x00
        0... = Reserved bit: Not set
        .0.. = Don't fragment: Not set
        ..0. = More fragments: Not set
    Fragment offset: 0
    Time to live: 127
    Protocol: UDP (0x11)
    Header checksum: 0x9281 (correct)
    Source: 10.48.74.126 (10.48.74.126)
    Destination: 10.48.73.246 (10.48.73.246)
User Datagram Protocol, Src Port: 20105 (20105), Dst Port: 12222 (12222)
    Source port: 20105 (20105)
    Destination port: 12222 (12222)
    Length: 78
    Checksum: 0x0000 (none)
LWAPP Encapsulated Packet
    Version: 0
    slotId: 1
    .... .0.. = Type: Encapsulated 80211
    .... ..0. = Fragment: Set
    .... ...0 = Fragment Type: Set
    Fragment Id: 0x1e
    Length: 64
    RSSI: 0xea
    SNR: 0x49
IEEE 802.11
    Type/Subtype: Association Request (0)
    Frame Control: 0x0000 (Swapped)
        Version: 0
        Type: Management frame (0)
        Subtype: 0
        Flags: 0x0
            DS status: Not leaving DS or network is operating in AD-HOC mode (To DS: 0  From DS: 0) (0x00)
            .... .0.. = More Fragments: This is the last fragment
            .... 0... = Retry: Frame is not being retransmitted
            ...0 .... = PWR MGT: STA will stay up
            ..0. .... = More Data: No data buffered
            .0.. .... = WEP flag: WEP is disabled
            0... .... = Order flag: Not strictly ordered
    Duration: 29952
    Destination address: 00:0b:85:24:e8:90 (10.48.74.126)
    Source address: 00:02:8a:d8:de:9a (100.0.253.3)
    BSS Id: 00:0b:85:24:e8:90 (10.48.74.126)
    Fragment number: 3
    Sequence number: 3845
IEEE 802.11 wireless LAN management frame
    Fixed parameters (4 bytes)
        Capability Information: 0x2100
            .... .... .... ...0 = ESS capabilities: Transmitter is a STA
            .... .... .... ..0. = IBSS status: Transmitter belongs to a BSS
            .... .... .... 00.. = CFP participation capabilities: Station is not CF-Pollable (0x0000)
            .... .... ...0 .... = Privacy: AP/STA cannot support WEP
            .... .... ..0. .... = Short Preamble: Short preamble not allowed
            .... .... .0.. .... = PBCC: PBCC modulation not allowed
            .... .... 0... .... = Channel Agility: Channel agility not in use
            .... .0.. .... .... = Short Slot Time: Short slot time not in use
            ..1. .... .... .... = DSSS-OFDM: DSSS-OFDM modulation allowed
        Listen Interval: 0xc800
    Tagged parameters (36 bytes)
        Tag Number: 0 (SSID parameter set)
        Tag length: 11
        Tag interpretation: adgar-voice
        Tag Number: 1 (Supported Rates)
        Tag length: 4
        Tag interpretation: Supported rates: 1.0 2.0 5.5 11.0 [Mbit/sec]
        Tag Number: 221 (Vendor Specific)
        Tag length: 7
        Tag interpretation: WME IE: type 2, subtype 0, version 1, parameter set 0
        Tag Number: 221 (Vendor Specific)
        Tag length: 6
        Tag interpretation: Vendor "AironetW" not interpreted

0000  00 0b 85 32 e4 05 00 0b 85 24 e8 90 08 00 45 00   ...2.....$....E.
0010  00 62 00 36 00 00 7f 11 92 81 0a 30 4a 7e 0a 30   .b.6.......0J~.0
0020  49 f6 4e 89 2f be 00 4e 00 00 08 1e 00 40 ea 49   I.N./[email protected]
0030  00 00 00 75 00 0b 85 24 e8 90 00 02 8a d8 de 9a   ...u...$........
0040  00 0b 85 24 e8 90 53 f0 00 21 00 c8 00 0b 61 64   ...$..S..!....ad
0050  67 61 72 2d 76 6f 69 63 65 01 04 02 04 0b 16 dd   gar-voice.......
0060  07 00 50 f2 02 00 01 00 dd 06 00 40 96 01 01 00   ..P........@....
No.     Time                       Source                Destination           Protocol Info
     12 2005-09-29 14:35:52.108063 10.48.74.126          100.0.253.3           IEEE 802.11 Association Response

Frame 12 (81 bytes on wire, 81 bytes captured)
    Arrival Time: Sep 29, 2005 14:35:52.108063000
    Time delta from previous packet: 0.038905000 seconds
    Time since reference or first frame: 2.198003000 seconds
    Frame Number: 12
    Packet Length: 81 bytes
    Capture Length: 81 bytes
    Protocols in frame: eth:ip:udp:lwapp:wlan
Ethernet II, Src: 00:0b:85:32:e4:05, Dst: 00:0b:85:24:e8:90
    Destination: 00:0b:85:24:e8:90 (10.48.74.126)
    Source: 00:0b:85:32:e4:05 (Airespac_32:e4:05)
    Type: IP (0x0800)
Internet Protocol, Src Addr: 10.48.73.246 (10.48.73.246), Dst Addr: 10.48.74.126 (10.48.74.126)
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..0. = ECN-Capable Transport (ECT): 0
        .... ...0 = ECN-CE: 0
    Total Length: 67
    Identification: 0xe6c0 (59072)
    Flags: 0x00
        0... = Reserved bit: Not set
        .0.. = Don't fragment: Not set
        ..0. = More fragments: Not set
    Fragment offset: 0
    Time to live: 127
    Protocol: UDP (0x11)
    Header checksum: 0xac15 (correct)
    Source: 10.48.73.246 (10.48.73.246)
    Destination: 10.48.74.126 (10.48.74.126)
User Datagram Protocol, Src Port: 12223 (12223), Dst Port: 20105 (20105)
    Source port: 12223 (12223)
    Destination port: 20105 (20105)
    Length: 47
    Checksum: 0x0000 (none)
LWAPP Encapsulated Packet
    Version: 0
    slotId: 1
    .... .0.. = Type: Encapsulated 80211
    .... ..0. = Fragment: Set
    .... ...0 = Fragment Type: Set
    Fragment Id: 0xbf
    Length: 33
    RSSI: 0x01
    SNR: 0x00
IEEE 802.11
    Type/Subtype: Association Response (1)
    Frame Control: 0x0010 (Swapped)
        Version: 0
        Type: Management frame (0)
        Subtype: 1
        Flags: 0x0
            DS status: Not leaving DS or network is operating in AD-HOC mode (To DS: 0  From DS: 0) (0x00)
            .... .0.. = More Fragments: This is the last fragment
            .... 0... = Retry: Frame is not being retransmitted
            ...0 .... = PWR MGT: STA will stay up
            ..0. .... = More Data: No data buffered
            .0.. .... = WEP flag: WEP is disabled
            0... .... = Order flag: Not strictly ordered
    Duration: 0
    Destination address: 00:02:8a:d8:de:9a (100.0.253.3)
    Source address: 00:0b:85:24:e8:90 (10.48.74.126)
    BSS Id: 00:0b:85:24:e8:90 (10.48.74.126)
    Fragment number: 0
    Sequence number: 0
IEEE 802.11 wireless LAN management frame
    Fixed parameters (6 bytes)
        Capability Information: 0x2104
            .... .... .... ...0 = ESS capabilities: Transmitter is a STA
            .... .... .... ..0. = IBSS status: Transmitter belongs to a BSS
            .... .... .... 01.. = CFP participation capabilities: Station is CF-Pollable, requesting to be placed on the CF-polling list (0x0001)
            .... .... ...0 .... = Privacy: AP/STA cannot support WEP
            .... .... ..0. .... = Short Preamble: Short preamble not allowed
            .... .... .0.. .... = PBCC: PBCC modulation not allowed
            .... .... 0... .... = Channel Agility: Channel agility not in use
            .... .0.. .... .... = Short Slot Time: Short slot time not in use
            ..1. .... .... .... = DSSS-OFDM: DSSS-OFDM modulation allowed
        Status code: Successful (0x0000)
        Association ID: 0x01c0
    Tagged parameters (3 bytes)
        Tag Number: 1 (Supported Rates)
        Tag length: 1
        Tag interpretation: Supported rates: 11.0(B) [Mbit/sec]

0000  00 0b 85 24 e8 90 00 0b 85 32 e4 05 08 00 45 00   ...$.....2....E.
0010  00 43 e6 c0 00 00 7f 11 ac 15 0a 30 49 f6 0a 30   .C.........0I..0
0020  4a 7e 2f bf 4e 89 00 2f 00 00 08 bf 00 21 01 00   J~/.N../.....!..
0030  00 10 00 00 00 02 8a d8 de 9a 00 0b 85 24 e8 90   .............$..
0040  00 0b 85 24 e8 90 00 00 04 21 00 00 c0 01 01 01   ...$.....!......
0050  96                                                .
No.     Time                       Source                Destination           Protocol Info
     13 2005-09-29 14:35:52.109698 10.48.73.246          10.48.74.126          LWAPP    CNTL CONFIGURE_COMMAND

Frame 13 (138 bytes on wire, 138 bytes captured)
    Arrival Time: Sep 29, 2005 14:35:52.109698000
    Time delta from previous packet: 0.001635000 seconds
    Time since reference or first frame: 2.199638000 seconds
    Frame Number: 13
    Packet Length: 138 bytes
    Capture Length: 138 bytes
    Protocols in frame: eth:ip:udp:lwapp:data
Ethernet II, Src: 00:0b:85:32:e4:05, Dst: 00:0b:85:24:e8:90
    Destination: 00:0b:85:24:e8:90 (10.48.74.126)
    Source: 00:0b:85:32:e4:05 (Airespac_32:e4:05)
    Type: IP (0x0800)
Internet Protocol, Src Addr: 10.48.73.246 (10.48.73.246), Dst Addr: 10.48.74.126 (10.48.74.126)
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..0. = ECN-Capable Transport (ECT): 0
        .... ...0 = ECN-CE: 0
    Total Length: 124
    Identification: 0xe6c1 (59073)
    Flags: 0x00
        0... = Reserved bit: Not set
        .0.. = Don't fragment: Not set
        ..0. = More fragments: Not set
    Fragment offset: 0
    Time to live: 127
    Protocol: UDP (0x11)
    Header checksum: 0xabdb (correct)
    Source: 10.48.73.246 (10.48.73.246)
    Destination: 10.48.74.126 (10.48.74.126)
User Datagram Protocol, Src Port: 12223 (12223), Dst Port: 20105 (20105)
    Source port: 12223 (12223)
    Destination port: 20105 (20105)
    Length: 104
    Checksum: 0x0000 (none)
LWAPP Encapsulated Packet
    Version: 0
    slotId: 0
    .... .1.. = Type: LWAPP Control Packet
    .... ..0. = Fragment: Set
    .... ...0 = Fragment Type: Set
    Fragment Id: 0xc0
    Length: 90
    RSSI: 0x00
    SNR: 0x00
LWAP Control Message
    Control Type: 12
    Control Sequence Number: 150
    Control Length: 82
Data (86 bytes)

0000  00 0b 85 24 e8 90 00 0b 85 32 e4 05 08 00 45 00   ...$.....2....E.
0010  00 7c e6 c1 00 00 7f 11 ab db 0a 30 49 f6 0a 30   .|.........0I..0
0020  4a 7e 2f bf 4e 89 00 68 00 00 04 c0 00 5a 00 00   J~/.N..h.....Z..
0030  0c 96 00 52 52 cc 56 e6 27 23 fa 1b 04 db e3 2e   ...RR.V.'#......
0040  70 ee 23 51 35 a2 79 c4 de 73 32 8b 10 ff a6 65   p.#Q5.y..s2....e
0050  c8 10 cc 99 f9 40 7c 64 a2 09 81 9b 11 d5 70 c7   .....@|d......p.
0060  27 1e 18 3c 37 26 65 88 d8 7e 79 75 9b 81 89 3f   '..<7&e..~yu...?
0070  85 3b ff 46 12 9c 73 9a 68 02 30 97 9e 0a f5 33   .;.F..s.h.0....3
0080  c4 47 3e 15 e4 ad 18 fa ca 66                     .G>......f
No.     Time                       Source                Destination           Protocol Info
     14 2005-09-29 14:35:52.109881 10.48.74.126          10.48.73.246          LWAPP    CNTL CONFIGURE_COMMAND_RES

Frame 14 (62 bytes on wire, 62 bytes captured)
    Arrival Time: Sep 29, 2005 14:35:52.109881000
    Time delta from previous packet: 0.000183000 seconds
    Time since reference or first frame: 2.199821000 seconds
    Frame Number: 14
    Packet Length: 62 bytes
    Capture Length: 62 bytes
    Protocols in frame: eth:ip:udp:lwapp:data
Ethernet II, Src: 00:0b:85:24:e8:90, Dst: 00:0b:85:32:e4:05
    Destination: 00:0b:85:32:e4:05 (Airespac_32:e4:05)
    Source: 00:0b:85:24:e8:90 (10.48.74.126)
    Type: IP (0x0800)
Internet Protocol, Src Addr: 10.48.74.126 (10.48.74.126), Dst Addr: 10.48.73.246 (10.48.73.246)
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..0. = ECN-Capable Transport (ECT): 0
        .... ...0 = ECN-CE: 0
    Total Length: 48
    Identification: 0x0037 (55)
    Flags: 0x00
        0... = Reserved bit: Not set
        .0.. = Don't fragment: Not set
        ..0. = More fragments: Not set
    Fragment offset: 0
    Time to live: 127
    Protocol: UDP (0x11)
    Header checksum: 0x92b2 (correct)
    Source: 10.48.74.126 (10.48.74.126)
    Destination: 10.48.73.246 (10.48.73.246)
User Datagram Protocol, Src Port: 20105 (20105), Dst Port: 12223 (12223)
    Source port: 20105 (20105)
    Destination port: 12223 (12223)
    Length: 28
    Checksum: 0x0000 (none)
LWAPP Encapsulated Packet
    AP Identity: 00:0b:85:24:e8:90 (10.48.74.126)
    Version: 0
    slotId: 0
    .... .1.. = Type: LWAPP Control Packet
    .... ..0. = Fragment: Set
    .... ...0 = Fragment Type: Set
    Fragment Id: 0x00
    Length: 8
    RSSI: 0x00
    SNR: 0x00
LWAP Control Message
    Control Type: 13
    Control Sequence Number: 150
    Control Length: 0
Data (4 bytes)

0000  00 0b 85 32 e4 05 00 0b 85 24 e8 90 08 00 45 00   ...2.....$....E.
0010  00 30 00 37 00 00 7f 11 92 b2 0a 30 4a 7e 0a 30   .0.7.......0J~.0
0020  49 f6 4e 89 2f bf 00 1c 00 00 00 0b 85 24 e8 90   I.N./........$..
0030  04 00 00 08 00 00 0d 96 00 00 80 48 e4 e0         ...........H..
No.     Time                       Source                Destination           Protocol Info
     15 2005-09-29 14:35:52.110132 100.0.253.3           Airespac_24:e8:9f     LLC      U, func=UI; SNAP, OUI 0x004096 (Unknown), PID 0x0000

Frame 15 (97 bytes on wire, 97 bytes captured)
    Arrival Time: Sep 29, 2005 14:35:52.110132000
    Time delta from previous packet: 0.000251000 seconds
    Time since reference or first frame: 2.200072000 seconds
    Frame Number: 15
    Packet Length: 97 bytes
    Capture Length: 97 bytes
    Protocols in frame: eth:ip:udp:lwapp:wlan:llc:data
Ethernet II, Src: 00:0b:85:24:e8:90, Dst: 00:0b:85:32:e4:05
    Destination: 00:0b:85:32:e4:05 (Airespac_32:e4:05)
    Source: 00:0b:85:24:e8:90 (10.48.74.126)
    Type: IP (0x0800)
Internet Protocol, Src Addr: 10.48.74.126 (10.48.74.126), Dst Addr: 10.48.73.246 (10.48.73.246)
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..0. = ECN-Capable Transport (ECT): 0
        .... ...0 = ECN-CE: 0
    Total Length: 83
    Identification: 0x0038 (56)
    Flags: 0x00
        0... = Reserved bit: Not set
        .0.. = Don't fragment: Not set
        ..0. = More fragments: Not set
    Fragment offset: 0
    Time to live: 127
    Protocol: UDP (0x11)
    Header checksum: 0x928e (correct)
    Source: 10.48.74.126 (10.48.74.126)
    Destination: 10.48.73.246 (10.48.73.246)
User Datagram Protocol, Src Port: 20105 (20105), Dst Port: 12222 (12222)
    Source port: 20105 (20105)
    Destination port: 12222 (12222)
    Length: 63
    Checksum: 0x0000 (none)
LWAPP Encapsulated Packet
    Version: 0
    slotId: 1
    .... .0.. = Type: Encapsulated 80211
    .... ..0. = Fragment: Set
    .... ...0 = Fragment Type: Set
    Fragment Id: 0x1f
    Length: 49
    RSSI: 0xeb
    SNR: 0x4a
IEEE 802.11
    Type/Subtype: Data (32)
    Frame Control: 0x0108 (Swapped)
        Version: 0
        Type: Data frame (2)
        Subtype: 0
        Flags: 0x1
            DS status: Frame is entering DS (To DS: 1  From DS: 0) (0x01)
            .... .0.. = More Fragments: This is the last fragment
            .... 0... = Retry: Frame is not being retransmitted
            ...0 .... = PWR MGT: STA will stay up
            ..0. .... = More Data: No data buffered
            .0.. .... = WEP flag: WEP is disabled
            0... .... = Order flag: Not strictly ordered
    Duration: 29952
    BSS Id: 00:0b:85:24:e8:90 (10.48.74.126)
    Source address: 00:02:8a:d8:de:9a (100.0.253.3)
    Destination address: 00:0b:85:24:e8:9f (Airespac_24:e8:9f)
    Fragment number: 4
    Sequence number: 5
Logical-Link Control
    DSAP: SNAP (0xaa)
    IG Bit: Individual
    SSAP: SNAP (0xaa)
    CR Bit: Command
    Control field: U, func=UI (0x03)
        000. 00.. = Command: Unnumbered Information (0x00)
        .... ..11 = Frame type: Unnumbered frame (0x03)
    Organization Code: Unknown (0x004096)
    Protocol ID: 0x0000
Data (17 bytes)

0000  00 0b 85 32 e4 05 00 0b 85 24 e8 90 08 00 45 00   ...2.....$....E.
0010  00 53 00 38 00 00 7f 11 92 8e 0a 30 4a 7e 0a 30   .S.8.......0J~.0
0020  49 f6 4e 89 2f be 00 3f 00 00 08 1f 00 31 eb 4a   I.N./..?.....1.J
0030  01 08 00 75 00 0b 85 24 e8 90 00 02 8a d8 de 9a   ...u...$........
0040  00 0b 85 24 e8 9f 54 00 aa aa 03 00 40 96 00 00   ...$..T.....@...
0050  00 11 40 01 00 0b 85 24 e8 9f 00 02 8a d8 de 9a   ..@....$........
0060  01                                                .
No.     Time                       Source                Destination           Protocol Info
     16 2005-09-29 14:35:52.111933 100.0.253.3           255.255.255.255       DHCP     DHCP Request  - Transaction ID 0xae41607e

Frame 16 (408 bytes on wire, 408 bytes captured)
    Arrival Time: Sep 29, 2005 14:35:52.111933000
    Time delta from previous packet: 0.001801000 seconds
    Time since reference or first frame: 2.201873000 seconds
    Frame Number: 16
    Packet Length: 408 bytes
    Capture Length: 408 bytes
    Protocols in frame: eth:ip:udp:lwapp:wlan:llc:ip:udp:bootp
Ethernet II, Src: 00:0b:85:24:e8:90, Dst: 00:0b:85:32:e4:05
    Destination: 00:0b:85:32:e4:05 (Airespac_32:e4:05)
    Source: 00:0b:85:24:e8:90 (10.48.74.126)
    Type: IP (0x0800)
Internet Protocol, Src Addr: 10.48.74.126 (10.48.74.126), Dst Addr: 10.48.73.246 (10.48.73.246)
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..0. = ECN-Capable Transport (ECT): 0
        .... ...0 = ECN-CE: 0
    Total Length: 394
    Identification: 0x0039 (57)
    Flags: 0x00
        0... = Reserved bit: Not set
        .0.. = Don't fragment: Not set
        ..0. = More fragments: Not set
    Fragment offset: 0
    Time to live: 127
    Protocol: UDP (0x11)
    Header checksum: 0x9156 (correct)
    Source: 10.48.74.126 (10.48.74.126)
    Destination: 10.48.73.246 (10.48.73.246)
User Datagram Protocol, Src Port: 20105 (20105), Dst Port: 12222 (12222)
    Source port: 20105 (20105)
    Destination port: 12222 (12222)
    Length: 374
    Checksum: 0x0000 (none)
LWAPP Encapsulated Packet
    Version: 0
    slotId: 1
    .... .0.. = Type: Encapsulated 80211
    .... ..0. = Fragment: Set
    .... ...0 = Fragment Type: Set
    Fragment Id: 0x20
    Length: 360
    RSSI: 0xe9
    SNR: 0x48
IEEE 802.11
    Type/Subtype: Data (32)
    Frame Control: 0x0108 (Swapped)
        Version: 0
        Type: Data frame (2)
        Subtype: 0
        Flags: 0x1
            DS status: Frame is entering DS (To DS: 1  From DS: 0) (0x01)
            .... .0.. = More Fragments: This is the last fragment
            .... 0... = Retry: Frame is not being retransmitted
            ...0 .... = PWR MGT: STA will stay up
            ..0. .... = More Data: No data buffered
            .0.. .... = WEP flag: WEP is disabled
            0... .... = Order flag: Not strictly ordered
    Duration: 29952
    BSS Id: 00:0b:85:24:e8:90 (10.48.74.126)
    Source address: 00:02:8a:d8:de:9a (100.0.253.3)
    Destination address: ff:ff:ff:ff:ff:ff (Broadcast)
    Fragment number: 4
    Sequence number: 261
Logical-Link Control
    DSAP: SNAP (0xaa)
    IG Bit: Individual
    SSAP: SNAP (0xaa)
    CR Bit: Command
    Control field: U, func=UI (0x03)
        000. 00.. = Command: Unnumbered Information (0x00)
        .... ..11 = Frame type: Unnumbered frame (0x03)
    Organization Code: Encapsulated Ethernet (0x000000)
    Type: IP (0x0800)
Internet Protocol, Src Addr: 100.0.253.3 (100.0.253.3), Dst Addr: 255.255.255.255 (255.255.255.255)
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..0. = ECN-Capable Transport (ECT): 0
        .... ...0 = ECN-CE: 0
    Total Length: 328
    Identification: 0x7623 (30243)
    Flags: 0x00
        0... = Reserved bit: Not set
        .0.. = Don't fragment: Not set
        ..0. = More fragments: Not set
    Fragment offset: 0
    Time to live: 128
    Protocol: UDP (0x11)
    Header checksum: 0x627e (correct)
    Source: 100.0.253.3 (100.0.253.3)
    Destination: 255.255.255.255 (255.255.255.255)
User Datagram Protocol, Src Port: bootpc (68), Dst Port: bootps (67)
    Source port: bootpc (68)
    Destination port: bootps (67)
    Length: 308
    Checksum: 0xda76 (correct)
Bootstrap Protocol
    Message type: Boot Request (1)
    Hardware type: Ethernet
    Hardware address length: 6
    Hops: 0
    Transaction ID: 0xae41607e
    Seconds elapsed: 0
    Bootp flags: 0x0000 (Unicast)
        0... .... .... .... = Broadcast flag: Unicast
        .000 0000 0000 0000 = Reserved flags: 0x0000
    Client IP address: 100.0.253.3 (100.0.253.3)
    Your (client) IP address: 0.0.0.0 (0.0.0.0)
    Next server IP address: 0.0.0.0 (0.0.0.0)
    Relay agent IP address: 0.0.0.0 (0.0.0.0)
    Client MAC address: 00:02:8a:d8:de:9a (100.0.253.3)
    Server host name not given
    Boot file name not given
    Magic cookie: (OK)
    Option 53: DHCP Message Type = DHCP Request
    Option 61: Client identifier
        Hardware type: Ethernet
        Client MAC address: 00:02:8a:d8:de:9a (100.0.253.3)
    Option 12: Host Name = "ahubert-w2k05"
    Option 60: Vendor class identifier = "MSFT 5.0"
    Option 55: Parameter Request List
        1 = Subnet Mask
        15 = Domain Name
        3 = Router
        6 = Domain Name Server
        44 = NetBIOS over TCP/IP Name Server
        46 = NetBIOS over TCP/IP Node Type
        47 = NetBIOS over TCP/IP Scope
        31 = Perform Router Discover
        33 = Static Route
        43 = Vendor-Specific Information
    End Option
    Padding

0000  00 0b 85 32 e4 05 00 0b 85 24 e8 90 08 00 45 00   ...2.....$....E.
0010  01 8a 00 39 00 00 7f 11 91 56 0a 30 4a 7e 0a 30   ...9.....V.0J~.0
0020  49 f6 4e 89 2f be 01 76 00 00 08 20 01 68 e9 48   I.N./..v... .h.H
0030  01 08 00 75 00 0b 85 24 e8 90 00 02 8a d8 de 9a   ...u...$........
0040  ff ff ff ff ff ff 54 10 aa aa 03 00 00 00 08 00   ......T.........
0050  45 00 01 48 76 23 00 00 80 11 62 7e 64 00 fd 03   E..Hv#....b~d...
0060  ff ff ff ff 00 44 00 43 01 34 da 76 01 01 06 00   .....D.C.4.v....
0070  ae 41 60 7e 00 00 00 00 64 00 fd 03 00 00 00 00   .A`~....d.......
0080  00 00 00 00 00 00 00 00 00 02 8a d8 de 9a 00 00   ................
0090  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
00a0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
00b0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
00c0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
00d0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
00e0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
00f0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
0100  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
0110  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
0120  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
0130  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
0140  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
0150  00 00 00 00 00 00 00 00 63 82 53 63 35 01 03 3d   ........c.Sc5..=
0160  07 01 00 02 8a d8 de 9a 0c 0d 61 68 75 62 65 72   ..........ahuber
0170  74 2d 77 32 6b 30 35 3c 08 4d 53 46 54 20 35 2e   t-w2k05<.MSFT 5.
0180  30 37 0a 01 0f 03 06 2c 2e 2f 1f 21 2b ff 00 00   07.....,./.!+...
0190  00 00 00 00 00 00 00 00                           ........
No.     Time                       Source                Destination           Protocol Info
     17 2005-09-29 14:35:52.153648 1.1.1.1               100.0.253.3           DHCP     DHCP ACK      - Transaction ID 0xae41607e

Frame 17 (412 bytes on wire, 412 bytes captured)
    Arrival Time: Sep 29, 2005 14:35:52.153648000
    Time delta from previous packet: 0.041715000 seconds
    Time since reference or first frame: 2.243588000 seconds
    Frame Number: 17
    Packet Length: 412 bytes
    Capture Length: 412 bytes
    Protocols in frame: eth:ip:udp:lwapp:wlan:llc:ip:udp:bootp
Ethernet II, Src: 00:0b:85:32:e4:05, Dst: 00:0b:85:24:e8:90
    Destination: 00:0b:85:24:e8:90 (10.48.74.126)
    Source: 00:0b:85:32:e4:05 (Airespac_32:e4:05)
    Type: IP (0x0800)
Internet Protocol, Src Addr: 10.48.73.246 (10.48.73.246), Dst Addr: 10.48.74.126 (10.48.74.126)
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..0. = ECN-Capable Transport (ECT): 0
        .... ...0 = ECN-CE: 0
    Total Length: 398
    Identification: 0xe6c2 (59074)
    Flags: 0x00
        0... = Reserved bit: Not set
        .0.. = Don't fragment: Not set
        ..0. = More fragments: Not set
    Fragment offset: 0
    Time to live: 127
    Protocol: UDP (0x11)
    Header checksum: 0xaac8 (correct)
    Source: 10.48.73.246 (10.48.73.246)
    Destination: 10.48.74.126 (10.48.74.126)
User Datagram Protocol, Src Port: 12223 (12223), Dst Port: 20105 (20105)
    Source port: 12223 (12223)
    Destination port: 20105 (20105)
    Length: 378
    Checksum: 0x0000 (none)
LWAPP Encapsulated Packet
    Version: 0
    slotId: 1
    .... .0.. = Type: Encapsulated 80211
    .... ..0. = Fragment: Set
    .... ...0 = Fragment Type: Set
    Fragment Id: 0xc1
    Length: 364
    RSSI: 0x01
    SNR: 0x00
IEEE 802.11
    Type/Subtype: Data (32)
    Frame Control: 0x0208 (Swapped)
        Version: 0
        Type: Data frame (2)
        Subtype: 0
        Flags: 0x2
            DS status: Frame is exiting DS (To DS: 0  From DS: 1) (0x02)
            .... .0.. = More Fragments: This is the last fragment
            .... 0... = Retry: Frame is not being retransmitted
            ...0 .... = PWR MGT: STA will stay up
            ..0. .... = More Data: No data buffered
            .0.. .... = WEP flag: WEP is disabled
            0... .... = Order flag: Not strictly ordered
    Duration: 0
    Destination address: 00:02:8a:d8:de:9a (100.0.253.3)
    BSS Id: 00:0b:85:24:e8:90 (10.48.74.126)
    Source address: 00:0b:85:24:e8:90 (10.48.74.126)
    Fragment number: 0
    Sequence number: 0
Logical-Link Control
    DSAP: SNAP (0xaa)
    IG Bit: Individual
    SSAP: SNAP (0xaa)
    CR Bit: Command
    Control field: U, func=UI (0x03)
        000. 00.. = Command: Unnumbered Information (0x00)
        .... ..11 = Frame type: Unnumbered frame (0x03)
    Organization Code: Encapsulated Ethernet (0x000000)
    Type: IP (0x0800)
Internet Protocol, Src Addr: 1.1.1.1 (1.1.1.1), Dst Addr: 100.0.253.3 (100.0.253.3)
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..0. = ECN-Capable Transport (ECT): 0
        .... ...0 = ECN-CE: 0
    Total Length: 332
    Identification: 0x0000 (0)
    Flags: 0x00
        0... = Reserved bit: Not set
        .0.. = Don't fragment: Not set
        ..0. = More fragments: Not set
    Fragment offset: 0
    Time to live: 255
    Protocol: UDP (0x11)
    Header checksum: 0x579b (correct)
    Source: 1.1.1.1 (1.1.1.1)
    Destination: 100.0.253.3 (100.0.253.3)
User Datagram Protocol, Src Port: bootps (67), Dst Port: bootpc (68)
    Source port: bootps (67)
    Destination port: bootpc (68)
    Length: 312
    Checksum: 0xd50f (correct)
Bootstrap Protocol
    Message type: Boot Reply (2)
    Hardware type: Ethernet
    Hardware address length: 6
    Hops: 0
    Transaction ID: 0xae41607e
    Seconds elapsed: 0
    Bootp flags: 0x0000 (Unicast)
        0... .... .... .... = Broadcast flag: Unicast
        .000 0000 0000 0000 = Reserved flags: 0x0000
    Client IP address: 100.0.253.3 (100.0.253.3)
    Your (client) IP address: 100.0.253.3 (100.0.253.3)
    Next server IP address: 0.0.0.0 (0.0.0.0)
    Relay agent IP address: 0.0.0.0 (0.0.0.0)
    Client MAC address: 00:02:8a:d8:de:9a (100.0.253.3)
    Server host name not given
    Boot file name not given
    Magic cookie: (OK)
    Option 53: DHCP Message Type = DHCP ACK
    Option 54: Server Identifier = 1.1.1.1
    Option 51: IP Address Lease Time = 1 day
    Option 1: Subnet Mask = 255.255.255.0
    Padding
    End Option
    Padding

0000  00 0b 85 24 e8 90 00 0b 85 32 e4 05 08 00 45 00   ...$.....2....E.
0010  01 8e e6 c2 00 00 7f 11 aa c8 0a 30 49 f6 0a 30   ...........0I..0
0020  4a 7e 2f bf 4e 89 01 7a 00 00 08 c1 01 6c 01 00   J~/.N..z.....l..
0030  02 08 00 00 00 02 8a d8 de 9a 00 0b 85 24 e8 90   .............$..
0040  00 0b 85 24 e8 90 00 00 aa aa 03 00 00 00 08 00   ...$............
0050  45 00 01 4c 00 00 00 00 ff 11 57 9b 01 01 01 01   E..L......W.....
0060  64 00 fd 03 00 43 00 44 01 38 d5 0f 02 01 06 00   d....C.D.8......
0070  ae 41 60 7e 00 00 00 00 64 00 fd 03 64 00 fd 03   .A`~....d...d...
0080  00 00 00 00 00 00 00 00 00 02 8a d8 de 9a 00 00   ................
0090  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
00a0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
00b0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
00c0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
00d0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
00e0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
00f0  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
0100  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
0110  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
0120  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
0130  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
0140  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
0150  00 00 00 00 00 00 00 00 63 82 53 63 35 01 05 36   ........c.Sc5..6
0160  04 01 01 01 01 33 04 00 01 51 80 01 04 ff ff ff   .....3...Q......
0170  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
0180  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ................
0190  00 00 00 00 00 00 00 ff 00 00 00 00               ............