When I try to install CentOS 5.5 in a new VM, I get an error that the installer is unable to retrieve stage2.img. I have verified the URL and I am able to download this file from a web browser.

I suspect it is a networking/routing issue, but I can't figure out what is wrong. This is a new install of XenServer 5.6 on a new server.

This server is remote, so I don't have physical access to the box - only ssh access.

Can anyone give me some tips on what might be wrong here? Do I need to do something special to get a net install to work?

For what it's worth, I see the same error trying to install Debian Woody using a similar process.

[Console Screenshot http://img.skitch.com/20100608-ki5wnghn57w4cwies4txs2akwc.png](http://img.skitch.com/20100608-ki5wnghn57w4cwies4txs2akwc.png)

[Update] On the host, here is the output of ifconfig:

```
eth0      Link encap:Ethernet  HWaddr 00:26:B9:66:F4:1B  
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:550110 errors:0 dropped:0 overruns:0 frame:0
          TX packets:87730 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:175102636 (166.9 MiB)  TX bytes:46959244 (44.7 MiB)
          Interrupt:20 Memory:e6000000-e6012800 

eth1      Link encap:Ethernet  HWaddr 00:26:B9:66:F4:1D  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
          Interrupt:19 Memory:e8000000-e8012800 

eth2      Link encap:Ethernet  HWaddr 00:26:B9:66:EC:44  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
          Interrupt:18 Memory:ea000000-ea012800 

eth3      Link encap:Ethernet  HWaddr 00:26:B9:66:EC:46  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
          Interrupt:20 Memory:ec000000-ec012800 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:35166 errors:0 dropped:0 overruns:0 frame:0
          TX packets:35166 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:74186349 (70.7 MiB)  TX bytes:74186349 (70.7 MiB)

xenbr0    Link encap:Ethernet  HWaddr 00:26:B9:66:F4:1B  
          inet addr:38.101.26.97  Bcast:38.101.26.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:511631 errors:0 dropped:0 overruns:0 frame:0
          TX packets:63220 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:159956363 (152.5 MiB)  TX bytes:44989078 (42.9 MiB)

xenbr1    Link encap:Ethernet  HWaddr 00:26:B9:66:F4:1D  
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

xenbr2    Link encap:Ethernet  HWaddr 00:26:B9:66:EC:44  
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

xenbr3    Link encap:Ethernet  HWaddr 00:26:B9:66:EC:46  
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

```