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Date: Wed, 24 Oct 2007 15:41:42 +0800
From: LiuJiusheng <liujiusheng@galaxywind.com>
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Subject: Routing problems
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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!