Date: Wed, 11 Jul 2012 00:31:11 -0400 From: "Michael R. Wayne" <wayne@staff.msen.com> To: freebsd-hackers@freebsd.org Subject: kernel ignores default route? Message-ID: <20120711043110.GR42080@manor.msen.com>
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One of my machines is doing something I can not understand and may
have uncovered some form of bug. The kernel appears to be ignoring
the default route. Had several people look this over, we can't
determine where the route is being hidden. This is 7.4-RELEASE-p2.
I suspect that rebooting the box will clear the problem but I would
REALLY like to figure out why the routing table is not being followed.
I have two routers, on the same ethernet at:
148.59.4.1 (default)
148.59.4.3 & 139.171.192.26
148.59.4.2 (FreeBSD box)
This is correct (see routing table below):
> traceroute -n 148.59.48.1
traceroute to 148.59.48.1 (148.59.48.1), 64 hops max, 40 byte packets
1 139.171.192.26 7.366 ms 4.748 ms 6.879 ms
2 148.59.48.1 3.357 ms 5.130 ms 3.006 ms
And "route" agrees:
> route -n get 148.59.48.1
route to: 148.59.48.1
destination: 148.59.48.0
mask: 255.255.255.192
gateway: 148.59.4.3
interface: fxp0
flags: <UP,GATEWAY,DONE,PROTO1>
recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire
0 0 0 0 0 0 1500 0
This is not, it should go out 148.59.4.1:
> traceroute -n 148.59.80.1
traceroute to 148.59.80.1 (148.59.80.1), 64 hops max, 40 byte packets
1 139.171.192.26 6.874 ms 6.496 ms 4.288 ms
2 139.171.198.139 5.907 ms 8.251 ms 4.156 ms
3 198.22.65.217 5.246 ms 4.961 ms 4.719 ms
4 198.22.65.222 14.096 ms 4.760 ms 6.545 ms
5 148.59.80.1 5.753 ms 5.813 ms 5.952 ms
"route" says it should:
> route -n get 148.59.80.1
route to: 148.59.80.1
destination: default
mask: default
gateway: 148.59.4.1
interface: fxp0
flags: <UP,GATEWAY,DONE,STATIC>
recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire
0 0 0 0 0 0 1500 0
netstat -rn (minus a few 148.59.4.x machines that can be ignored)
Internet:
Destination Gateway Flags Refs Use Netif Expire
default 148.59.4.1 UGS 0 667619000 fxp0
10.151.89.0/24 link#1 UC 0 0 em0
10.151.89.49 00:c0:9f:21:b2:31 UHLW 1 14 lo0
127.0.0.1 127.0.0.1 UH 2 23811 lo0
148.59.4.0/27 link#2 UC 0 0 fxp0
148.59.4.1 00:a0:c8:2c:5f:38 UHLW 2 602 fxp0 47
148.59.4.3 00:a0:c8:2c:5f:38 UHLW 5 0 fxp0 23
148.59.4.64 ff:ff:ff:ff:ff:ff UHLWb 1 14991 em0 =>
148.59.4.64/26 link#1 UC 0 0 em0
148.59.4.66 00:02:b3:e9:0e:c0 UHLW 1 8098 em0 903
148.59.4.130 148.59.4.129 UH 0 2073 tun0
148.59.48.0/26 148.59.4.3 UG1 0 1158 fxp0
148.59.50.0/24 148.59.4.3 UG1 0 194507 fxp0
148.59.80.39 148.59.4.3 UGH1 0 0 fxp0
198.11.50.21 148.59.4.3 UGH1 0 0 fxp0
224.0.0.5 127.0.0.1 UGH1 0 0 lo0
224.0.0.6 127.0.0.1 UGH1 0 0 lo0
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