FAQ Search Today's Posts Mark Forums Read
» Video Reviews

» Linux Archive

Linux-archive is a website aiming to archive linux email lists and to make them easily accessible for linux users/developers.

» Sponsor

» Partners

» Sponsor

Go Back   Linux Archive > CentOS > CentOS

LinkBack Thread Tools
Old 09-15-2012, 12:49 PM
Steve Thompson
Default Basic KVM networking question

On Mon, 10 Sep 2012, Steve Thompson wrote:

> On Mon, 10 Sep 2012, Steve Thompson wrote:
>> On Mon, 10 Sep 2012, Dale Dellutri wrote:
>>> This looks like it should work for Client A, but maybe not for Client B (see
>>> below). So maybe it's a firewall problem (iptables chain FORWARD) on the
>>> host?
> Let me expand on this. There is no issue with a client on net1
> communicating with a client on net2; the host passes packets from one
> subnet to the other as it should. The only issue is when the client is a
> virtual machine on the host.

For those following along at home, the solution to this turned out to be
related to the change in the function of the net.ipv4.conf.default.rp_filter
parameter in the CentOS 6 kernels; it had nothing to do with KVM. Changing
the value of rp_filter from 1 to 2 resolved all issues.

CentOS mailing list

Thread Tools

All times are GMT. The time now is 09:52 AM.

VBulletin, Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO ©2007, Crawlability, Inc.
Copyright 2007 - 2008, www.linux-archive.org