Hello,
The best way to setup a secondary interface is by doing:
auto eth0
iface eth0 inet static
address x.x.x.11
............
............
auto eth0:0
iface eth0:0 inet static
address x.x.x.12
netmask 255.255.255.0
broadcast x.x.x.255
gateway x.x.x.1
But something like the following added to the eth0 definition should also
work:
up ip addr add x.x.x.12/24 brd x.x.x.255 dev eth0 label eth0:0
I'm not sure why it worked with 2.2.2, maybe your friend did change
something in the shorewall config with the older version.
There is a good document on the shorewall site, in the documentation
section (2.4), about "Shorewall and Aliased Interfaces". The config
changes needed in shorewall are also described there.
Eric
> Hello all,
>
>
> I help a friend to upgrade his Bering-U (v2.2.2 - kernel 2.4.26) to the
> latest and greatest v2.4-beta1 (kernel 2.4.32) and at the same time move
> from PC to WRAP box. He has 2 static IPs (x.x.x.11 and x.x.x.12) and the
> setting in network/interfaces file on the old router is
>
> auto eth0 iface eth0 inet static address x.x.x.11 netmask 255.255.255.0
> broadcast x.x.x.255 gateway x.x.x.1 # secondary IP
> up ip addr add x.x.x.12/24 dev eth0
>
> I use the same settings for the new etc.lrp on WRAP box.
>
>
> From the old router, I can ping both IP, x.x.x.11 and x.x.x.12 from
> outside. But when booting WRAP, I can ping only the first one, x.x.x.11
> but not the other. We also turn on shorewall logging to make sure ping is
> allowed and we did not see anything regarding this 'ping'. My friend
> rebooted the ADSL modem but results are the same. When he connect back to
> the old router, things are OK again and I can ping both IPs.
>
> Is that possible that the ISP keeps the old information about the card
> (e.g.
> MAC address) and so we need to turn off ADSL for a while to flush the
> cache or the syntax in 2.4.32 kernel has changed or is there anything I
> did wrong?
>
> Thank you for any suggestions.
>
>
>
>
>
>
>
>
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