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[Xen-devel] Re: Qestion about the Xen network?

To: Samuel Thibault <samuel.thibault@xxxxxxxxxxxx>, Bei Guan <gbtju85@xxxxxxxxx>, Xen Devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-devel] Re: Qestion about the Xen network?
From: Bei Guan <gbtju85@xxxxxxxxx>
Date: Fri, 22 Oct 2010 23:26:35 +0800
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2010/10/22 Samuel Thibault <samuel.thibault@xxxxxxxxxxxx>
Bei Guan, le Fri 22 Oct 2010 22:56:29 +0800, a écrit :
> root@ubuntu:~/test1# ./server 13
> Server get connection from
> [root@localhost test1]# ./client 13
> agrv[1] =
> I have received:Hello! Are You Fine?
> I can not understand why the server just print the virbr0' IP address (it is
> xen net bridge) other than Dom0's real IP,

Because that's the IP of the Dom0 interface from which the connection is
made.  It's just the same as in a usual intranet/internet router box.

> What the relationship
> between the two IPs( and

None, except your dom0 has these two addresses.

> If I put server in Dom0 and the client in Ubuntu. The client can not connect to
> the server. However, I can ping Dom0's IP ( successfully from
> Ubuntu. What's reason?

We can't divine, show your code / iptables configuration / tcpdump
output.  The usual network stuff, actually.

Sorry, you mean the client and server code? The iptables configurations of all the Ubuntu PV and Dom0?



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