Re: Routing problems
- From: John-Mark Gurney <gurney_j@xxxxxxxxxxxxxxxxxx>
- Date: Wed, 24 Oct 2007 11:56:10 -0700
LiuJiusheng wrote this message on Wed, Oct 24, 2007 at 15:41 +0800:
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.
You need to have the gateway for 4.4.4/24 be 2.2.2.2... The routing
code isn't smart enough to follow the trail through 6.6.6/24 to get to
2.2.2.2....
--
John-Mark Gurney Voice: +1 415 225 5579
"All that I will do, has been done, All that I have, has not."
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