I think, but don't know for a fact, that if you don't specify a bridge interface in your config, you'll get a 'nat' address in your domU. I posted about it in my blog: <a href="http://yablog-gary.blogspot.com/2007/12/xen-what-i-learned-today.html">
http://yablog-gary.blogspot.com/2007/12/xen-what-i-learned-today.html</a> -- maybe that will get you on the right track?<div><br class="webkit-block-placeholder"></div><div>thanks.<br><br><div class="gmail_quote">On Dec 27, 2007 5:19 PM, Joseph L. Casale <
<a href="mailto:jcasale@activenetwerx.com">jcasale@activenetwerx.com</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Hi,<br>I tried this post on the Xen list first with no answer. I have 4 machines and 3 of which (all different) have no network access when booted into Xen. I tried using Fedora Core 8 and it produced the same results. Is it normal for the virbr0 interface to take an arbitrary IP? How does it decide what to use? An ifconfig when booted into Xen shows the following:
<br><br>eth0 Link encap:Ethernet HWaddr 00:0C:29:4A:69:63<br> inet addr:<a href="http://192.168.5.30" target="_blank">192.168.5.30</a> Bcast:<a href="http://192.168.5.255" target="_blank">192.168.5.255</a>
Mask:<a href="http://255.255.255.0" target="_blank">255.255.255.0</a><br> inet6 addr: fe80::20c:29ff:fe4a:6963/64 Scope:Link<br> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1<br> RX packets:25 errors:0 dropped:0 overruns:0 frame:0
<br> TX packets:9 errors:0 dropped:0 overruns:0 carrier:0<br> collisions:0 txqueuelen:0<br> RX bytes:1763 (1.7 KiB) TX bytes:594 (594.0 b)<br><br>lo Link encap:Local Loopback<br> inet addr:
<a href="http://127.0.0.1" target="_blank">127.0.0.1</a> Mask:<a href="http://255.0.0.0" target="_blank">255.0.0.0</a><br> inet6 addr: ::1/128 Scope:Host<br> UP LOOPBACK RUNNING MTU:16436 Metric:1<br>
RX packets:3 errors:0 dropped:0 overruns:0 frame:0<br> TX packets:3 errors:0 dropped:0 overruns:0 carrier:0<br> collisions:0 txqueuelen:0<br> RX bytes:336 (336.0 b) TX bytes:336 (336.0
b)<br><br>peth0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF<br> inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link<br> UP BROADCAST RUNNING NOARP MTU:1500 Metric:1<br> RX packets:28 errors:0 dropped:0 overruns:0 frame:0
<br> TX packets:21 errors:0 dropped:0 overruns:0 carrier:0<br> collisions:0 txqueuelen:1000<br> RX bytes:1943 (1.8 KiB) TX bytes:1314 (1.2 KiB)<br> Interrupt:17 Base address:0x1400<br>
<br>vif0.0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF<br> inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link<br> UP BROADCAST RUNNING NOARP MTU:1500 Metric:1<br> RX packets:9 errors:0 dropped:0 overruns:0 frame:0
<br> TX packets:25 errors:0 dropped:0 overruns:0 carrier:0<br> collisions:0 txqueuelen:0<br> RX bytes:594 (594.0 b) TX bytes:1763 (1.7 KiB)<br><br>virbr0 Link encap:Ethernet HWaddr 00:00:00:00:00:00
<br> inet addr:<a href="http://192.168.122.1" target="_blank">192.168.122.1</a> Bcast:<a href="http://192.168.122.255" target="_blank">192.168.122.255</a> Mask:<a href="http://255.255.255.0" target="_blank">255.255.255.0
</a><br> inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link<br> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1<br> RX packets:0 errors:0 dropped:0 overruns:0 frame:0<br> TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
<br> collisions:0 txqueuelen:0<br> RX bytes:0 (0.0 b) TX bytes:468 (468.0 b)<br><br>xenbr0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF<br> inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link<br>
UP BROADCAST RUNNING NOARP MTU:1500 Metric:1<br> RX packets:34 errors:0 dropped:0 overruns:0 frame:0<br> TX packets:0 errors:0 dropped:0 overruns:0 carrier:0<br> collisions:0 txqueuelen:0
<br> RX bytes:1881 (1.8 KiB) TX bytes:0 (0.0 b)<br><br>Thanks for any pointers!<br>jlc<br><br>_______________________________________________<br>CentOS mailing list<br><a href="mailto:CentOS@centos.org">CentOS@centos.org
</a><br><a href="http://lists.centos.org/mailman/listinfo/centos" target="_blank">http://lists.centos.org/mailman/listinfo/centos</a><br></blockquote></div><br></div>