On Jul 31, 2011, at 4:26 PM, ramkumar.parana...@gmail.com wrote: > I have smtp traffic over ipv6 tunneled in ipv4. .ip->ipv6->tcp->smtp > How can we set bpf to filter smtp in ipv6 in ipv4 tunnel traffic? I have > tried with ip protochain 0x06 it is not working.
"ip protochain" doesn't support "shifting gears" from IPv4 to IPv6; it only supports AH. There is, unfortunately, currently no way to ask for the type of filtering you need - libpcap doesn't know about IP protocol 41 (which I assume is what's being used here). Time permitting, I'll look at implementing something.- This is the tcpdump-workers list. Visit https://cod.sandelman.ca/ to unsubscribe.
