On Wed, 2004-08-25 at 16:02, Jeff Vian wrote:
> > And if anyone
> > is listening that might fix this, please also add a straightforward
> > way to control the source address used for outbound connections when
> > a machine is given multiple addresses on the same subnet for virtual
> > hosting.
> >
> >
> if your system has several IP addresses added as aliases on a single
> interface/subnet, the routing table will provide the 'source' addresses
> for outgoing communications.
>
> if for example you have 4 IP addresses assigned as follows
> eth0 192.168.2.1
> eth0:1 192.168.2.2
> eth0:2 192.168.2.3
> eth0:3 192.168.2.4
>
> Then the routing table will work as:
>
> 192.168.2.0 * 255.255.255.0 U 0 0 0 eth0
> the source will be 192.168.2.1
> 192.168.2.0 * 255.255.255.0 U 0 0 0 eth0:1
> the source will be 192.168.2.2
> 192.168.2.0 * 255.255.255.0 U 0 0 0 eth0:2
> the source will be 192.168.2.3
>
> etc.
Suppose you originate a connection to another network and
your router is at 192.168.2.254. Any of those addresses would
work as the source. Does it pick the 1st, last, or at random?
There was a variable called NOALIASROUTING in the config files
when I looked long ago but I never found any documentation
about what it was supposed to do or if there was a way to set
it other than mucking around in the stuff under /etc/sysconfig.
---
Les Mikesell
les@xxxxxxxxxxxxxxxx
