Messages in this thread | | | Subject | Re: BUG: IPv6 stops working after a while, needs ip ne del command to reset | From | Eric Dumazet <> | Date | Tue, 17 Aug 2010 08:00:02 +0200 |
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Le mardi 17 août 2010 à 07:35 +0200, Thomas Habets a écrit : > On Mon, 16 Aug 2010, Thomas Habets wrote: > > Am I not allowed to add addresses to lo? That I've deconfigured this address > > and rebooted the box to check if this matters. > > It didn't help. > > > I will re-check ethtool and Cisco router output for mismatches when it breaks > > again to make sure that there's no change or errors counting up. > > IPv6 is currently not working and it's still 1000 Full on both sides > ("show int GiX/Y" and "ethtool eth0"). > No errors in "ethtool -S eth0" or "show int GiX/Y". > > "ethtool eth0" output is the same as yesterday. > > Here's the addresses and routing table as they are now, and have been > since reboot: > > $ ip -6 a > 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 > inet6 ::1/128 scope host > valid_lft forever preferred_lft forever > 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qlen 1000 > inet6 2a00:800:752:1::5c:2/112 scope global > valid_lft forever preferred_lft forever > inet6 fe80::224:81ff:fea3:4424/64 scope link > valid_lft forever preferred_lft forever > > > $ ip -6 r sh > 2a00:800:752:1::5c:0/112 dev eth0 proto kernel metric 256 mtu 1500 > advmss 1440 hoplimit 4294967295 > > fe80::/64 dev eth0 proto kernel metric 256 mtu 1500 advmss 1440 > hoplimit 4294967295 > > default via 2a00:800:752:1::5c:1 dev eth0 metric 1024 mtu 1500 advmss > 1440 hoplimit 4294967295 > > $ ip -6 ne sh > 2a00:800:752:1::5c:1 dev eth0 lladdr 00:22:55:17:4b:80 router STALE > > [try ping6 again, no reply] > > $ ip -6 ne sh > 2a00:800:752:1::5c:1 dev eth0 lladdr 00:22:55:17:4b:80 router DELAY > > [try ping6 again, no reply] > > $ ip -6 ne sh > 2a00:800:752:1::5c:1 dev eth0 lladdr 00:22:55:17:4b:80 router REACHABLE >
This seems a bit different than previous mail. Apparently discovery now works ?
Could you have a tcpdump on both sides ?
Maybe your host is OK, but other side drops your ICMP packets ?
> [try ping6 again, no reply] > > Configured network with /etc/network/interfaces: > > auto lo > iface lo inet loopback > > allow-hotplug eth0 > iface eth0 inet static > address x.x.x.x > netmask 255.255.255.252 > broadcast x.x.x.x > gateway x.x.x.x > up ip a a 2a00:800:752:1::5c:2/112 dev eth0 > up ip r a default via 2a00:800:752:1::5c:1 > dns-nameservers x.x.x.x > dns-search xxxx.net
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