bind in multi eth (virtual) situations

[Angel Luis Uruñuela]

amh wrote:
> 
> i've read and read and searched and searched, but can't find the info i'm
> looking for.
> 
> i'll give a rough example.
> 
> i have a machine with several ips tied to it (linux, 2.2.16) as eth0 thru
> eth0:whatever.
> 
> my nameserver address is *not* the default (eth0) address of the machine.
> 
> i use listen-on to force it to listen to the nameserver ip, but i want all
> communication with bind to be done via this ip.
> 
> i can't find any directive to force *all* communication to be via this
> 'virtual' ip. a good example is NOTIFYs sent by this primary server, they're
> always seen by the secondarys as coming from the primary's default ip, *not*
> the nameserver ip.
> 

	You can't do this with any directive. You must use the routing table.
For example:

/sbin/route del -net default dev eth0
/sbin/route del -net 172.24.64.0 netmask 255.255.255.0 dev eth0
/sbin/route add -host <ROUTER_IP> dev eth0:1
/sbin/route add default gw <ROUTER_IP> dev eth1:0


Regards,	

-- 
Angel Luis Uruñuela <> Unix Systems Administrator

"You can't change the past, but you can ruin
the present by worrying over the future"