[Xen-users] Debian 4.0, domU's can not get network access

["Nicolai Lang" <nicolai@xxxxxxxxxx>]

Hi all,

I have installed a Debian 4.0 (newly released), compiled and installed Xen.
All went as I am used to from Ubuntu.

I created a new guest with Debian Etch debootstrap, and it boots without
problems. But it can not fetch an IP address from my DHCP server
(10.13.15.1). When I use TCPDump on xenbr0, it only shows the requets being
transmitted but nothing is recieved. 

I hope I have included all relevant information below, and I hope someone
can help me where to look for the cause. I have searched widely in the Wiki,
google and mailinglist.

Once I suceed, I will post an new article on the Wiki with a step-by-step
guide to compiling and installing Xen from source on Debian 4.0.

Thank you very much in advance

Best regards
Nicolai

        
root@judas:~# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:0E:A6:F9:95:61
          inet addr:10.13.15.50  Bcast:10.13.15.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:677 errors:0 dropped:0 overruns:0 frame:0
          TX packets:522 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:85879 (83.8 KiB)  TX bytes:96248 (93.9 KiB)
          Interrupt:17 Base address:0x6000

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: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)

xenbr0    Link encap:Ethernet  HWaddr 00:00:00:00:00:00
          UP BROADCAST RUNNING NOARP  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)

                  
root@judas:~# iptables -L
Chain INPUT (policy ACCEPT)
target     prot opt source               destination

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination
root@judas:~#


Console during startup:
Setting up networking....
Configuring network interfaces...Internet Systems Consortium DHCP Client
V3.0.4
Copyright 2004-2006 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/

Listening on LPF/eth0/00:16:3e:00:01:03
Sending on   LPF/eth0/00:16:3e:00:01:03
Sending on   Socket/fallback
DHCPREQUEST on eth0 to 255.255.255.255 port 67
DHCPREQUEST on eth0 to 255.255.255.255 port 67
DHCPREQUEST on eth0 to 255.255.255.255 port 67
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 4
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 4
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 9
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 10
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 15
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 12
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 7
No DHCPOFFERS received.


After the startup - notice that vifl1.0 and xenbr0 recieves data, but
nothing is transmitted
root@judas:~# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:0E:A6:F9:95:61
          inet addr:10.13.15.50  Bcast:10.13.15.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:960 errors:0 dropped:0 overruns:0 frame:0
          TX packets:826 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:108668 (106.1 KiB)  TX bytes:203020 (198.2 KiB)
          Interrupt:17 Base address:0x6000

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: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)

vif1.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          UP BROADCAST RUNNING NOARP  MTU:1500  Metric:1
          RX packets:15 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:32
          RX bytes:3420 (3.3 KiB)  TX bytes:0 (0.0 b)

xenbr0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          UP BROADCAST RUNNING NOARP  MTU:1500  Metric:1
          RX packets:15 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:3420 (3.3 KiB)  TX bytes:0 (0.0 b)

root@judas:~# brctl show
bridge name     bridge id               STP enabled     interfaces
xenbr0          8000.feffffffffff       no              vif1.0

deamon.log:
Apr 15 17:17:44 judas logger: /etc/xen/scripts/block: add
XENBUS_PATH=backend/vbd/1/770
Apr 15 17:17:44 judas logger: /etc/xen/scripts/block: add
XENBUS_PATH=backend/vbd/1/769
Apr 15 17:17:45 judas logger: /etc/xen/scripts/vif-bridge: online
XENBUS_PATH=backend/vif/1/0
Apr 15 17:17:45 judas logger: /etc/xen/scripts/block: Writing
backend/vbd/1/769/node /dev/loop0 to xenstore.
Apr 15 17:17:45 judas logger: /etc/xen/scripts/block: Writing
backend/vbd/1/769/physical-device 7:0 to xenstore.
Apr 15 17:17:45 judas logger: /etc/xen/scripts/block: Writing
backend/vbd/1/769/hotplug-status connected to xenstore.
Apr 15 17:17:45 judas logger: /etc/xen/scripts/vif-bridge: Successful
vif-bridge online for vif1.0, bridge xenbr0.
Apr 15 17:17:45 judas logger: /etc/xen/scripts/vif-bridge: Writing
backend/vif/1/0/hotplug-status connected to xenstore.
Apr 15 17:17:46 judas logger: /etc/xen/scripts/block: Writing
backend/vbd/1/770/node /dev/loop1 to xenstore.
Apr 15 17:17:46 judas logger: /etc/xen/scripts/block: Writing
backend/vbd/1/770/physical-device 7:1 to xenstore.
Apr 15 17:17:46 judas logger: /etc/xen/scripts/block: Writing
backend/vbd/1/770/hotplug-status connected to xenstore.

messages:
Apr 15 17:16:14 judas dhcdbd: message_handler: message handler not found
under /com/redhat/dhcp/eth0 for sub-path eth0.dbus.get.reason
Apr 15 17:16:14 judas dhcdbd: message_handler: message handler not found
under /com/redhat/dhcp/eth0 for sub-path eth0.dbus.get.reason
Apr 15 17:16:16 judas dhcdbd: message_handler: message handler not found
under /com/redhat/dhcp/eth0 for sub-path eth0.dbus.get.host_name
Apr 15 17:16:16 judas dhcdbd: message_handler: message handler not found
under /com/redhat/dhcp/eth0 for sub-path eth0.dbus.get.domain_name
Apr 15 17:16:16 judas dhcdbd: message_handler: message handler not found
under /com/redhat/dhcp/eth0 for sub-path eth0.dbus.get.nis_domain
Apr 15 17:16:16 judas dhcdbd: message_handler: message handler not found
under /com/redhat/dhcp/eth0 for sub-path eth0.dbus.get.nis_servers
Apr 15 17:16:17 judas kernel: Bridge firewalling registered
Apr 15 17:17:45 judas kernel: device vif1.0 entered promiscuous mode
Apr 15 17:17:45 judas kernel: ip_tables: (C) 2000-2006 Netfilter Core Team
Apr 15 17:17:49 judas kernel: xenbr0: port 1(vif1.0) entering learning state
Apr 15 17:17:49 judas kernel: xenbr0: topology change detected, propagating
Apr 15 17:17:49 judas kernel: xenbr0: port 1(vif1.0) entering forwarding
state

xend-debug.log:
Xend started at Sun Apr 15 17:16:16 2007.
ifdown: interface eth0 not configured
SIOCSIFNAME: Device or resource busy




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