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Message-ID: <alpine.LRH.2.00.0809241326070.30892@netcore.fi> Date: Wed, 24 Sep 2008 13:31:32 +0300 (EEST) From: Pekka Savola <pekkas@...core.fi> To: netdev@...r.kernel.org Subject: /proc/net/igmp group address encoding Hi, I've spotted some irritating IGMPv3/v2 compat problems on RHEL4, and I'm working on trying to see if these are due to bugs already fixed in latest kernels. In the process, I started wondering about /proc/net/igmp format (on 2.6.26.5-39.fc9.i686): [psavola@...ps ~]$ more /proc/net/igmp Idx Device : Count Querier Group Users Timer Reporter 1 lo : 0 V3 010000E0 1 0:00000000 0 2 eth0 : 2 V3 010000E0 1 0:00000000 0 3 wmaster0 : 3 V3 010000E0 1 0:00000000 0 4 wlan0 : 3 V3 010000E0 1 0:00000000 0 (The header and the fields seem to be a little off in the output..) [psavola@...ps ~]$ netstat -gn | grep eth0 eth0 1 224.0.0.1 eth0 1 ff02::1 It appears "010000E0" is 224.0.0.1 encoded in in hex but right-to-left. Other groups are similarly encoded. /proc/net/igmp6 is encoded in a human-friendly format. Is this intentional? Should this be changed, e.g. to flow left-to-right and use the dotted quad IP address format? -- Pekka Savola "You each name yourselves king, yet the Netcore Oy kingdom bleeds." Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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