* [gentoo-user] Re: Packet sniffing broken recently?
@ 2011-12-29 7:10 99% ` Lubos Kolouch
0 siblings, 0 replies; 1+ results
From: Lubos Kolouch @ 2011-12-29 7:10 UTC (permalink / raw
To: gentoo-user
walt, Wed, 28 Dec 2011 17:01:59 -0800:
> Sometime in the last month or so (when I wasn't looking) my ~x86 and
> ~amd64 machines quit working when I try to run wireshark or tcpdump,
> etc, but I don't know exactly when or why. (My amd64 machine still
> sniffs packets normally.)
>
> I get this same error from any packet sniffing app:
>
> Can't open netlink socket 93:Protocol not supported
>
> Strace shows that this is the failing system call:
>
> socket(PF_NETLINK, SOCK_RAW, 12) = -1 EPROTONOSUPPORT (Protocol not
> supported)
>
> That makes me think of some missing kernel config that may have been
> added or modified in recent kernels, so I tried gentoo-sources-3.0.6
> (same as my working amd64 machine) with no joy. Same error message.
>
> Have I missed some important gentoo bulletin about networking recently?
> Anyone have working packet sniffing on ~arch?
Hi,
If I remember correctly, I needed to set
Networking support -> Networking options -> Network packet filtering
framework (Netfilter) -> Core Netfilter Configuration -> Netfilter
connection tracking support
It has been a while though, so it may be another option in the
netfilter config - just try it :)
Lubos
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