Nevermind. I copied my ISP's line verbatim, including the erroneous /112 mask. On Friday, March 30, 2012 1:27pm, "Steve Snyder" <swsnyder at snydernet.net> said: > I can't get IPv6 routing to configure correctly despite everything I've read > saying it should > > This is my network config on a fully-updated CentOS 5.8 system: > > # cat /etc/sysconfig/network > NETWORKING=yes > NETWORKING_IPV6=yes > HOSTNAME=my.hostname.com > GATEWAY=aaa.bbb.ccc.ddd > IPV6_DEFAULTGW=2a02:aaaa.bbbb::1 > IPV6_DEFAULTDEV=eth0 > > # cat /etc/sysconfig/network-scripts/ifcfg-eth0 > ONBOOT=yes > DEVICE=eth0 > BOOTPROTO=static > HWADDR=52:54:00:68:42:1E > IPADDR=000.111.222.333 > NETMASK=255.255.255.128 > IPV6INIT=yes > IPV6ADDR=2a02:aaaa.bbbb:178:209:50:230:0/112 > > Attempts to use the IPv6 address fail. For example: > > # ping6 -c 2 2a00:1450:4016:800::1013 > connect: Network is unreachable > > However it works if I manually enter these 2 lines: > > # route -A inet6 add ::/0 dev eth0 > # ip -6 route add 2000::/3 via 2a02:aaaa.bbbb::1 metric 1 > > # ping6 -c 2 2a00:1450:4016:800::1013 > PING 2a00:1450:4016:800::1013(2a00:1450:4016:800::1013) 56 data bytes > 64 bytes from 2a00:1450:4016:800::1013: icmp_seq=0 ttl=57 time=91.2 ms > 64 bytes from 2a00:1450:4016:800::1013: icmp_seq=1 ttl=57 time=95.3 ms > > These are the routing table entries added by my hand-added configuration: > > 2000::/3 via 2a02:418:6a04::1 dev eth0 metric 1 expires 21333054sec mtu 1500 > advmss 1440 hoplimit 4294967295 > default dev eth0 metric 1 expires 21333054sec mtu 1500 advmss 1440 hoplimit > 4294967295 > > > So... given the parameters set in my config files, why are the CentOS v5.8 > initscripts not configuring my IPv6 routing correctly? > > One more thing. I get this output on network start up (prior to > hand-configuration): > > Bringing up interface eth0: WARN : [ipv6_add_route] 'No route to host' adding > route '::/0' via gateway '2a02:aaaa.bbbb::1' through device 'eth0' > > Thanks. > > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos >