[Xen-users] can't ping / connect to aliased IP from internet

[Rudi Ahlers <Rudi@xxxxxxxxxxx>]

Hi all

I have a very strange problem. One of our servers run CentOS 5.1 x64, 
with the default Xen from CentOS repositories, and then I'm running 
Windows 2003 & CentOS 5.1 XEN domU guests on it.
Both the Windows & Linux domU's have 2 IP's to connect to from the 
internet. But on the Linux domU I can only connect to one of it's IP's, 
the other one refuse to accept connections from the internet. From the 
dom0 I can connect to both IP's, and when I setup a new domU VPS, I can 
connect to the IP in question as well. I can add a 3rd IP to the Linux 
domU, and connect to that as well.
So, the XEN server is on x.x.x.47, with the Linux domU on x.x.x.48 & 
x.x.x.49 - I can connect fine to x.x.x.48, but not x.x.x.49. If I add 
x.x.x.52 to the domU, I can connect to x.x.x.52 as well.
I have also gone as far as setting up a new Linux domU using x.x.x.49, 
and then it works fine, but I need both .48 & .49 on the same Linux domU 
(and software). There's no firewall setup at all.
So, how / where do I debug this?

--

Kind Regards
Rudi Ahlers
CEO, SoftDux

Web:   http://www.SoftDux.com
Check out my technical blog, http://blog.softdux.com for Linux or other 
technical stuff, or visit http://www.WebHostingTalk.co.za for Web Hosting stuff


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