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SubjectRe: Possible routing bug [2.1.97]
On Thu, Apr 23, 1998 at 05:18:11PM -0400, Roy P. Turner wrote:

> Why is the local ethernet route listed twice? I also see this on
> my 2.1.97 box.
>
> 206.104.221.243 0.0.0.0 255.255.255.255 UH 0 0 0 eth0
> 206.104.221.242 0.0.0.0 255.255.255.255 UH 0 0 0 eth0
> 206.104.221.241 0.0.0.0 255.255.255.255 UH 0 0 0 eth0
> 206.104.221.240 0.0.0.0 255.255.255.255 UH 0 0 0 eth0
> 206.104.221.244 0.0.0.0 255.255.255.255 UH 0 0 0 eth0

These are host routes - eth0 has more than one IP address bound.

> 206.104.221.224 0.0.0.0 255.255.255.224 U 0 0 0 eth0
> 206.104.221.224 0.0.0.0 255.255.255.224 U 0 0 0 eth0

I'm guessing you added a `localnet' route (as you would have to do in 2.0.x,
this is not necessary in 2.1.x as the kernel does it for you. So we end up
with two routes the same.

For example:

[root:10] caffeine:~# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
localnet * 255.255.224.0 U 0 0 0 eth0
localnet * 255.255.224.0 U 0 0 0 eth0
[...]

[root:10] caffeine:~# ifconfig eth0:9 192.168.0.0 netmask 255.255.224.0
[root:10] caffeine:~# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
192.168.0.0 * 255.255.224.0 U 0 0 0 eth0
localnet * 255.255.224.0 U 0 0 0 eth0
localnet * 255.255.224.0 U 0 0 0 eth0
[...]



-Chris

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