Kok-Yong Tan said the following:
...
what packets are going between the two and the only way is to insert
a hub between the two--that's what Stephen Fisher is telling you.
Oy, gotcha..... Thanks
Why not just use "ifconfig -a" to find out what interfaces are
available and active?
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en0: flags=8822<BROADCAST,SMART,SIMPLEX,MULTICAST> mtu 1500
ether 00:16:cb:8e:95:f8
media: autoselect (none) status: inactive
supported media: autoselect 10baseT/UTP <half-duplex> 10baseT/UTP
<full-duplex> 10baseT/UTP <full-duplex,hw-loopback> 10baseT/UTP
<full-duplex,flow-control> 100baseTX <half-duplex> 100baseTX <full-duplex>
100baseTX <full-duplex,hw-loopback> 100baseTX <full-duplex,flow-control>
1000baseT <full-duplex> 1000baseT <full-duplex,hw-loopback> 1000baseT
<full-duplex,flow-control> none
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to name a few
anyway, thanks for the help.