Re: [tcpdump-workers] tcpdump problem

[Mercia Eliane Bittencourt Figueredo]

Hello,

>Looking at the ATM code in 2.4.9 (not the -ac5 version), it appears
>that, in addition to supporting LLC encapsulation, it also supports
>"null encapsulation", which I assume is what RFC 1483 calls "VC Based
>Multiplexing", where a given virtual circuit carries only traffic for a
>particular network-layer protocol, and no header is added to the IP
>packet.
>
>Are you using null encapsulation or LLC/SNAP encapsulation?

I dont know...because I cant find a place to configure it... I only saw
802.2 LLC for AX.25 connections

>I think it *might* be possible to make capture filters that check for AA
>AA 03 00 00 00, to determine whether null or LLC/SNAP encapsulation is
>being used, but I'm not sure it's actually worth the trouble of doing
>so, rather than just using "cooked mode", as my patch does.
>
Your patch is working  :)

Thanks very much
Mercia


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