Multiple external interfaces on the director

Ken Brownfield krb at
Tue Mar 14 20:22:52 GMT 2006

I've done a lot of googling and archive searching, so I've seen the  
general fwmark state tracking described.  Reading this, it seems like  
this patch isn't exactly approved or even obviously available.  And  
the article is from 2002. :)

I'm also not sure why this seems like such a difficult problem.  If  
LVS honored routes, there would be no complicated hacks required.   
Unless LVS overrides routes, in which case it might be nice to have a  
switch to turn off that optimization.

I understand that routes are a subset of the problem fixed by the  
patch, and I can see the value of the patch.  But for the basic route  
case it seems odd for LVS to just dump all outgoing packets to the  
default gw.  I mean, it could cache the routing table instead of just  
a single gw?

Anyway, thoughts appreciated, including a source for a patch that  
will apply to a recent ipvs.  Or word that it's built-in?

krb at

On Mar 14, 2006, at 3:07 AM, Joseph Mack NA3T wrote:

> On Mon, 13 Mar 2006, Ken Brownfield wrote:
>> However, I need to support VIPs on the director that live on two  
>> separate external subnets:
> do you know about this
> HOWTO.ipvsadm.html#Henrik
> Joe
> -- 
> Joseph Mack NA3T EME(B,D), FM05lw North Carolina
> jmack (at) wm7d (dot) net - azimuthal equidistant map
> generator at Homepage http:// 
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