Re: Virtual Networking Interface Problem
On Monday 06 August 2007 12:12, Hal Vaughan wrote:
> I've been working on a project with some Linksys routers. New routers
> are set to use the IP address 192.168.1.1 and my network uses the
> 172.16.*.* address space. I've had this in my
> workstation's /etc/network/interfaces file:
>
> auto eth0
> iface eth0 inet static
> address 172.16.7.11
> netmask 255.255.255.0
> gateway 172.16.7.1
>
> To access the Linksys routers when I first get them, I added this:
>
> auto eth0:0
> iface eth0:0 inet static
> address 192.168.1.128
> netmask 255.255.255.0
> gateway 172.16.7.1
>
> Then I restarted my network and I have eth0:0 with the address
> 192.168.1.128. Using route gives this (edited for space):
>
> Kernel IP routing table
> Destination Gateway Genmask Flags Metric Ref Use
> Iface
> 172.16.7.0 * 255.255.255.0 U 0 0 0 eth0
> 192.168.1.0 * 255.255.255.0 U 0 0 0 eth0
> link-local * 255.255.0.0 U 1000 0 0 eth0
> default fw.loc.lan 0.0.0.0 UG 0 0 0 eth0
> default fw.loc.lan 0.0.0.0 UG 0 0 0 eth0
>
> (fw.loc.lan is the firewall between my LAN and the Internet.)
>
> I don't see any reference to eht0:0 at all. I don't know if that
> matters.
>
> After restarting my network, I can't reach anything on the Internet.
>
> Does it matter that route doesn't seem to see a difference between eth0
> and eth0:0?
>
> What do I need to do to be able to do this and not lose access to
> domains on the other side of my gateway? Why does it change routing so
> my computer doesn't work through the regular gateway I've set?
>
> Thanks!
>
> Hal
You don't need to specify the gateway for eth0:0.
I also needed to configure devices that had distinct ip address values by
default. I had a similar setup until recently when I switched to using ip
syntax instead of the 'old way.' Here's a sample of my interfaces file:
address 123.456.789.2
netmask 255.255.255.252
gateway 123.456.789.1
up ip addr add 10.1.250.15/24 brd 10.1.250.255 dev eth0 label eth0:0
up ip addr add 10.10.10.15/24 brd 10.10.10.255 dev eth0 label eth0:1
aptitude install iproute
man ip
See if something like that will work for you.
Regards,
Anson
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