On Mon, 2007-01-15 at 06:39 +0200, Pekka Savola wrote: > On Sat, 13 Jan 2007, Pekka Savola wrote: > > FC6 updates-testing kernel based on 18.104.22.168 (kernel-2.6.19-1.2895.fc6) seems > > to have a broken IPv6 stateless address autoconf. The previous, successfully > > tested version was based on 22.214.171.124 (kernel-2.6.18-1.2860.fc6). > > > > The problem appears to be that the host is not joining the all-nodes > > multicast address (ff02::1) [netstat -g -n], so the IP layer isn't processing > > the received router advertisements even though you can see them with tcpdump. > > The solicited node mcast address is joined though. Loopback interface doesn't > > join ff02::1 either. > > > > linux-2.6-xen.patch at least seems to be making some modifications to IPv6 ND > > code, but I didn't look closely enough if that's the culprit. > > > > If it matters, the network adapter is Realtek 8139. > Two more bits of information: > - one person commented off-list that for him, breakage happened > between 126.96.36.199 and 188.8.131.52. > - kernel-2.6.20rc4-git4 [latest from devel kernel-2.6.19-1.2911] is > also similarly affected. According to comments on lkml, a fix went in post 2.6.20rc5 to fix joining the all nodes multicast group and that does fix the breakage. I think that pretty much implies that 2.6.19 is toast for IPv6. Waiting for 2.6.20... > -- > Pekka Savola "You each name yourselves king, yet the > Netcore Oy kingdom bleeds." > Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings Mike -- Michael H. Warfield (AI4NB) | (770) 985-6132 | mhw WittsEnd com /\/\|=mhw=|\/\/ | (678) 463-0932 | http://www.wittsend.com/mhw/ NIC whois: MHW9 | An optimist believes we live in the best of all PGP Key: 0xDF1DD471 | possible worlds. A pessimist is sure of it!
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