IP Aliasing with Linux 2.4

[M. Scholz]

this could be an artifact of something else, too.

Have you checked your ipchains rules to make sure you're not arbitrarily
dropping the packet?  Just a thought.

	If you're happy and you know it....

-Matthew Scholz

On Mon, 9 Apr 2001, matt william barclay wrote:

> Hello,
>
> I am running linux 2.4.3 and trying to alias an IP on eth1.  Here are the
> commands I've issued:
>
> $ ifconfig eth1:0 192.168.1.30
> $ route add -host 192.168.1.30 dev eth1:0
>
> So now ifconfig looks like:
> ...
> eth1:0    Link encap:Ethernet  HWaddr 00:30:22:52:AF:AB
>           inet addr:192.168.1.30  Bcast:192.168.1.255  Mask:255.255.255.0
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           Interrupt:11 Base address:0xd800
>
> And route -n looks like:
> ...
> 192.168.1.30    0.0.0.0         255.255.255.255 UH    0      0        0 eth1
> 192.168.1.0     0.0.0.0         255.255.255.0   U     0      0        0 eth1
> ...
>
> But when I ping 192.168.1.30:
>
> PING 192.168.1.30 (192.168.1.30) from 192.168.1.30 : 56(84) bytes of data.
> ping: sendto: Operation not permitted
> ping: wrote 192.168.1.30 64 chars, ret=-1
> ping: sendto: Operation not permitted
> ping: wrote 192.168.1.30 64 chars, ret=-1
> ping: sendto: Operation not permitted
> ping: wrote 192.168.1.30 64 chars, ret=-1
>
> I don't understand why this doesn't work.  It seems the only thing changed
> from 2.2 to 2.4 in the Aliasing code is the removal of the #ifdef
> CONFIG_IP_ALIAS statements.
>
> I'm not sure where to go from here.  Has anyone had any luck with IP
> aliasing with the 2.4 kernel?
>
> Thanks,
> Matt
>
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