Date: Thu, 08 Jan 2015 00:14:36 +0100 From: Przemyslaw Frasunek <przemyslaw@frasunek.com> To: freebsd-net@freebsd.org Subject: Corrupted IPv6 routing table Message-ID: <54ADBDDC.3040901@frasunek.com>
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Dear all, We are running FreeBSD 9.2-RELEASE-p3 on few PPPoE access servers, each servicing about 1000 customers. Each server exchanges customers' /32 (for IPv4) and /64 (for IPv6) routes using OSPF and BIRD. Few times in a month, we are experiencing routing table corruption, which causes spurious IPv6 routes appearing with prefixlen 0: # netstat -nr -f inet6 | grep "/\0" 2a02:2928:6:989e::/0 fe80::21e:67ff:fe02:e82b%vlan0 UG1 vlan0 2a02:2928:6:989f::/0 fe80::21e:67ff:fe02:e82b%vlan0 UG1 vlan0 It is impossible to delete such routes and they override default route, making IPv6 networking nonfunctional. They definitely does not originate from OSPF, as there is an export filter which denies prefixlen < 32. Has anyone seen this before?
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