Date: Wed, 24 Oct 2007 15:41:42 +0800 From: LiuJiusheng <liujiusheng@galaxywind.com> To: freebsd-net@freebsd.org Subject: Routing problems Message-ID: <471EF736.1070207@galaxywind.com>
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Hello all:
I have found something interesting in FreeBSD routing. This is a test environment, which is not used in reality(perhaps meaningless).
| host |-------| router1 |----------| router2 |
2.2.2.2 2.2.2.1 6.6.6.1 6.6.6.2 X.X.X.X
(All run FreeBSD OS)
Two routes is added to the router1. (4.4.4.0/24 6.6.6.2) and (6.6.6.0/24 2.2.2.2).Then the routing table look this:
Destination Gateway Flags Refs Use Netif Expire
2 link#3 UC 0 0
2.2.2.1 00:0c:29:67:a5:88 UHLW 0 4
2.2.2.2 00:09:6b:42:94:b7 UHLW 1 2 1068
4.4.4/24 6.6.6.2 UGS 0 38
6 link#4 UC 0 0
6.6.6/24 2.2.2.2 UGS 1 0
At this time, route 4.4.4.0 can not be used. When ping 4.4.4.4, the machine prints: sent to: Invalid argument. If I remove the route 6.6.6.0/24, then all become correct.
I think this happens because Arp is stored in the routing table (That means this is a design problem).
I am just start reading the FreeBSD code, so I don't know if I make some mistake. If I am correct, is there any solutions to this problem.(I test it in linux, and it works fine).
Thank you!
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