On Thursday 29 Dec 2011 07:10:19 Lubos Kolouch wrote: > 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
tcpdump-3.9.8-r1 and kernel-3.0.6-gentoo works fine here with no errors. $ cat /usr/src/linux/.config | grep CONNTRACK CONFIG_NF_CONNTRACK=y CONFIG_NF_CONNTRACK_MARK=y # CONFIG_NF_CONNTRACK_EVENTS is not set CONFIG_NF_CONNTRACK_TIMESTAMP=y # CONFIG_NF_CONNTRACK_AMANDA is not set CONFIG_NF_CONNTRACK_FTP=y # CONFIG_NF_CONNTRACK_H323 is not set CONFIG_NF_CONNTRACK_IRC=y CONFIG_NF_CONNTRACK_BROADCAST=y # CONFIG_NF_CONNTRACK_NETBIOS_NS is not set CONFIG_NF_CONNTRACK_SNMP=y # CONFIG_NF_CONNTRACK_PPTP is not set # CONFIG_NF_CONNTRACK_SANE is not set CONFIG_NF_CONNTRACK_SIP=y # CONFIG_NF_CONNTRACK_TFTP is not set CONFIG_NETFILTER_XT_MATCH_CONNTRACK=y CONFIG_NF_CONNTRACK_IPV4=y CONFIG_NF_CONNTRACK_PROC_COMPAT=y CONFIG_NF_CONNTRACK_IPV6=y HTH. -- Regards, Mick
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