NIC Selection

[Martin Stone]

That's not taken care of by Mozilla, rather by your routing setup.  Check out 
the output of:

netstat -nr

That's your routing table.  By default, when an interface comes up on an IP, an 
interface route is added through that interface for that IP network - so if your 
eth0 came up on 10.0.1.2/24, you'd see a route in there for 10.0.1.0/24 through 
eth0 - then there is the default (0.0.0.0) route. That's usually the route that 
matches any network that is not directly connected.  So if you had a default 
route through say 10.0.1.1, your internet traffic would want to be routed thru 
10.0.1.1 - to get to 10.0.1.1, IP knows that it has to use eth0, so the traffic 
goes out eth0 destined for 10.0.1.1.

Or maybe you're just asking about where the NIC's get configured?  That info is 
in /etc/sysconfig/network-scripts - check out ifcfg-* in that directory.  Also, 
your default route is set by the GATEWAY entry in /etc/sysconfig/network.

Hope this helps!
Martin


Timothy J. Miller wrote:
> When a system has 2 network cards that are on the same network,
> how does FC1 select which NIC to use?  By that I mean, Mozilla starts up,
> what causes it to use one card, say eth1 over eth0?  Anyone know?
> 
> Thanks
> 
> - Tim
> 
>