[Baylisa] DSR load balancer oddities with Ubuntu?

Fri May 10 12:08:48 PDT 2013

Check if you are running into return path issue. I.e. traffic comes in one path tries to leave another. 

Ulf Zimmermann | OPENLANE, Inc.
2200 Bridge Parkway, Suite 202
Redwood City, CA 94065, USA
Tel +1-650-412-4042 | ulf at Openlane.com

On May 10, 2013, at 11:57, Ray Wong <rayw at rayw.net> wrote:

> Hey, I know the list has been quiet on tech discussions lately, but I'm
> hoping someone can help as my google-fu is not strong on this, it seems.
> 
> We've been trying to migrate some of our old Fedora Core machines to Ubuntu
> (12.04LTS), and have run into an annoying difference in network behavior,
> which I'm hoping someone else has encountered and figured out a fix.
> 
> We split our CIDR allocation, and backhaul our office bandwidth through the
> colo a couple blocks away. The load balanced network and the office are
> routed and separate blocks/masks/vlans, but for some reason office traffic
> can't seem to talk to Ubuntu servers using DSR behind an F5 BigIP. The FC
> machines work fine, it's only Ubuntu that doesn't seem able to do this, and
> it works from anywhere outside. I'm using the dummy interface for the VIPs
> with the arp_ignore set to 1 and arp_announce set to 2, which seems to have
> everything working except for this one strange issue.
> 
> Anyone else doing this successfully?
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