Hi,
Can you open an issue on wireshark gitlab ? With pcap file and link to spec.
Cheers 
Hi,
This is to inform you that we are supporting FEC Stack Change Sub-TLV in DDMAP TLV. I have Hex Dump, which is correct as per my understanding but it is not getting decoded on Wireshark or Online Decoder.
Please let me know if the latest Wireshark  "
Version 3.6.0 (v3.6.0-0-g3a34e44d02c9)" supports the following (RFC 8029  
3.4.1.3.  FEC Stack Change Sub-TLV) :-
1) Multiple FEC stack change sub-TLV in DDMap TLV, whereas single FEC stack change TLV is decoded properly. Please find the HEX dump below.
2) FEC stack change sub-TLV along with FEC stack sub-TLV in DDMap TLV is not decoded properly. Please find the HEX dump below.
I am having following HEX Dump, which is not getting decoded properly on wireshark or online decoder "
https://hpd.gasmi.net/"
Two  FEC stack Sub-TLV in DDMAP TLV not decoded properly on wireshark or on https://hpd.gasmi.net/Ethernet:   	18 92 a4 55 71 04 00 23 8a fb c2 04 81 00 00 d4
				08 00 
				
IP:				45 00 
IP Len:			00 68
				71 a5 00 00 ff 11 29 a4 07 07
				07 07 09 09 09 09 
				
UDP:			0d af 0d af 
UPD Len:		00 54
				a8 b1 
				
ECHO:			00 01
				00 00 02 02 08 02 00 00 00 16 00 00 00 03 e4 ae
				50 eb 6f c5 47 9d e4 ae 50 eb 70 2a dc 4c 
DDMAP:			00 14 00 28 
				05 dc 01 02 d2 01 01 01 d2 01 01 01 00 00
SUB-Len:		00 18 
              			
Stack-chg Type:	00 03 00 08 
Value		 :	02 01 00 00 
				06 06 06 06
				
Stack-chg Type:	00 03 00 08
Value		 :	02 01 00 00 
				07 07 07 07
FEC stack change sub-TLV with FEC sub-TLV (IGP IPV4 Prefix Segment TLV) not decoded properly on wireshark or on https://hpd.gasmi.net/. 
Ethernet:   	18 92 a4 55 71 04 00 23 8a fb c2 04 81 00 00 d4
				08 00 
				
IP:				45 00 
IP Len:			00 68
				71 a5 00 00 ff 11 29 a4 07 07
				07 07 09 09 09 09 
				
UDP:			0d af 0d af 
UPD Len:		00 54
				a8 b1 
				
ECHO:			00 01
				00 00 02 02 08 02 00 00 00 16 00 00 00 03 e4 ae
				50 eb 6f c5 47 9d e4 ae 50 eb 70 2a dc 4c 
DDMAP:			00 14 00 28
				05 dc 01 02 d2 01 01 01 d2 01 01 01 00 00
SUB-Len:		00 18 
              			
Stack-chg Type:	00 03 00 08 
Value		 :	02 01 0c 00 
				06 06 06 06
				
FEC TLV Type:	00 0e 00 08
Value		 :	01 01 01 01 
 20 00 00 00
Ethernet:		18 92 a4 55 71 04 00 23 8a fb c2 04 81 00 00 d4
				08 00 
				
IP:				45 00 
IP Len:			00 60
				71 a5 00 00 ff 11 29 a4 07 07
				07 07 09 09 09 09 
				
UDP:			0d af 0d af 
UPD Len:		00 4C
				a8 b1
MPLS Echo:		00 01
				00 00 02 02 08 02 00 00 00 16 00 00 00 03 e4 ae
				50 eb 6f c5 47 9d e4 ae 50 eb 70 2a dc 4c 
DDMAP:			00 14 00 20 
				05 dc 01 02 d2 01 01 01 d2 01 01 01 00 00
SUB-Len:		00 10 
                
Label-S:		00 02 00 04 
				00 00 30 06
				
Label-S:		00 02 00 04 
				00 00 30 06
 
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