cannot route after adding more interfaces

[Shao Zhang <shao@cia.com.au>]

Hi,	
	At one of our servers here, we have about 11 ip adresses
	allocated to it.

	However, when I try to add an additonal interface, the server
	cannot traceroute to anywhere anymore.

	In particular,  the last couple of entries in the routing table
	look strange:

	100.100.100.0     *               255.255.255.0   U     0      0 26201 eth0:11
	100.100.100.0     *               255.255.255.0   U     0      0 2233 eth0
	127.0.0.0         *               255.0.0.0       U     0      0 0 lo
	default           our.gate.way.ip 0.0.0.0         UG    1      0 13866 eth0:11

	where 100.100.100.0 is our entire network. eth0:11 is the last
	interface we added in /etc/init.d/network. With this, everything
	still works fine.

	Now, when I add an additional interface, eth0:7 which isn't used
	before, the routing tables change to the following:

	100.100.100.0     *               255.255.255.0   U     0      0 0 eth0:7
	100.100.100.0     *               255.255.255.0   U     0      0 26251 eth0:11
	100.100.100.0     *               255.255.255.0   U     0      0 2233 eth0
	127.0.0.0         *               255.0.0.0       U     0      0 0 lo
	default           our.gate.way.ip 0.0.0.0         UG    1      0 16 eth0:7


	And the machine can no longer traceroute to anywhere.

	Could anyone please tell me how to change it to use eth0 for
	default instead of 11 or 7.

	Thanks in advance.

Cheers,

Shao.



-- 
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Shao Zhang - Running Debian 2.1  ___ _               _____
Department of Communications    / __| |_  __ _ ___  |_  / |_  __ _ _ _  __ _ 
University of New South Wales   \__ \ ' \/ _` / _ \  / /| ' \/ _` | ' \/ _` |
Sydney, Australia               |___/_||_\__,_\___/ /___|_||_\__,_|_||_\__, |
Email: shao@cia.com.au                                                  |___/ 
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