I believe that this happens because the config (/proc/sys/net/ipv6/conf/all/accept_ra_defrtr) says to accept a default route, and you have one specified in /etc/network/interfaces, and therefore the advertised default route fails to get added to the routing table.
It would be a good thing if the logged error (1) said what it was trying to add as the default route, and (2) was rate limited, and (3) pointed at accept_ra_defrtr Having ifup turn off accept_ra_defrtr when it adds a default route might be a good thing, too. Just my thoughts. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1065974 Title: dmesg full of "ICMPv6 RA: ndisc_router_discovery() failed to add default route" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1065974/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
