Re: [gentoo-user] Adding more than one static IP

[Amar Cosic <amar.cosic@gmail.com>]

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On Tue, Jan 25, 2011 at 9:01 AM, Adam Carter <adamcarter3@gmail.com> wrote:

>
> config_eth0=( "77.xxx.104.14/24" )
>> routes_eth0=( "default via 77.xxx.104.1" )
>> config_eth0:1=( "77.xxx.104.100/24" )
>> routes_eth0:1=( "default via 77.xxx.104.1" )
>> config_eth0:2=( "77.xxx.104.101/24" )
>> routes_eth0:2=( "default via 77.xxx.104.1" )
>> config_eth0:3=( "77.xxx.105.100/24" )
>> routes_eth0:3=( "default via 77.xxx.105.1" )
>>
>
> You should let us know what you're trying to achieve with this. Every time
> I have seen config like this, it has been because of fundamental
> misunderstandings of networking. More that one IP address on a subnet
> (unless there are VIPs) = fail.
>
> Remember routing occurs at layer 3, and for most configs should have no
> reference physical interface. The OS knows which interface the next hop can
> be found. In your config you've set the same route three times which makes
> no sense.
>
> (ok i've oversimplified, but for 99.9% of cases the above is true)
>

I have this on Debian in /etc/network/interfaces:

auto lo
iface lo inet loopback
auto eth0
iface eth0 inet static
address 82.xxx.148.194
netmask 255.255.255.128
gateway 82.xxx.148.131
auto eth0:1
iface eth0:1 inet static
address 82.xxx.148.195
netmask 255.255.255.128
auto eth0:2
iface eth0:2 inet static
address 82.xxx.148.196
netmask 255.255.255.128
auto eth0:3
iface eth0:3 inet static
address 82.xxx.148.197
netmask 255.255.255.128


What I want to know is what is equivalent for this on Gentoo.  Let's just
say this is VPS server with 4 IP's assigned to me as customer


-- 
Amar Ćosić
amar.cosic@gmail.com

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