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[Xen-bugs] [Bug 414] New: Networking on guest domain not functional

To: xen-bugs@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-bugs] [Bug 414] New: Networking on guest domain not functional
From: bugzilla-daemon@xxxxxxxxxxxxxxxxxxx
Date: Wed, 16 Nov 2005 22:22:33 +0000
Delivery-date: Wed, 16 Nov 2005 22:22:37 +0000
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http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=414

           Summary: Networking on guest domain not functional
           Product: Xen
           Version: unstable
          Platform: All
        OS/Version: Linux
            Status: NEW
          Severity: critical
          Priority: P2
         Component: Guest-OS
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: dbarrera@xxxxxxxxxx
                CC: hohnbaum@xxxxxxxxxx,pl@xxxxxxxxxx


The guest domain on an FC3 machine with today's build has a networking
problem--t is unable to access the network. The guest domain cannot be accessed
from the outside either, nor does it return a ping. This setup has worked
reliably previously, so it is unlikely a setup issue. 

changeset:   7826:9bf6f907b3ff
tag:         tip
user:        kaf24@xxxxxxxxxxxxxxxxxxxx
date:        Wed Nov 16 04:29:52 2005 +0100
summary:     Trivial coding style fix.

I am curious as to why 'ifconfig -a' shows so many "veth's". The machine has
only one NIC.

          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:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

veth3     Link encap:Ethernet  HWaddr 00:00:00:00:00:00
          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:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

veth4     Link encap:Ethernet  HWaddr 00:00:00:00:00:00
          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:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

veth5     Link encap:Ethernet  HWaddr 00:00:00:00:00:00
          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:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

veth6     Link encap:Ethernet  HWaddr 00:00:00:00:00:00
          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:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

veth7     Link encap:Ethernet  HWaddr 00:00:00:00:00:00
          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:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

vif0.0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:123 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4587 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:15900 (15.5 KiB)  TX bytes:381001 (372.0 KiB)

vif0.1    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          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:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

vif0.2    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          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:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

vif0.3    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          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:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

vif0.4    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          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:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

vif0.5    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          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:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

vif0.6    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          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:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

vif0.7    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          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: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 MULTICAST  MTU:1500  Metric:1
          RX packets:137 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3947 errors:0 dropped:84 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:5950 (5.8 KiB)  TX bytes:281309 (274.7 KiB)

xenbr0    Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:4462 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:251956 (246.0 KiB)  TX bytes:0 (0.0 b)



[root@thinkcentre-dom0 xen-unstable.hg]# ip addr show
1: peth0: <BROADCAST,MULTICAST,NOARP,UP> mtu 1500 qdisc pfifo_fast qlen 1000
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
2: lo: <LOOPBACK,UP> mtu 16436 qdisc noqueue
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
3: vif0.0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
4: eth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue
    link/ether 00:0d:60:f0:c5:c8 brd ff:ff:ff:ff:ff:ff
    inet 9.53.41.163/24 brd 9.53.41.255 scope global eth0
5: vif0.1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
6: veth1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop
    link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
7: vif0.2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
8: veth2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop
    link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
9: vif0.3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
10: veth3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop
    link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
11: vif0.4: <BROADCAST,MULTICAST> mtu 1500 qdisc noop
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
12: veth4: <BROADCAST,MULTICAST> mtu 1500 qdisc noop
    link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
13: vif0.5: <BROADCAST,MULTICAST> mtu 1500 qdisc noop
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
14: veth5: <BROADCAST,MULTICAST> mtu 1500 qdisc noop
    link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
15: vif0.6: <BROADCAST,MULTICAST> mtu 1500 qdisc noop
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
16: veth6: <BROADCAST,MULTICAST> mtu 1500 qdisc noop
    link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
17: vif0.7: <BROADCAST,MULTICAST> mtu 1500 qdisc noop
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
18: veth7: <BROADCAST,MULTICAST> mtu 1500 qdisc noop
    link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
19: xenbr0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff
20: vif1.0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue
    link/ether fe:ff:ff:ff:ff:ff brd ff:ff:ff:ff:ff:ff

[root@thinkcentre-dom0 xen-unstable.hg]# ip route show
9.53.41.0/24 dev eth0  proto kernel  scope link  src 9.53.41.163
169.254.0.0/16 dev eth0  scope link
default via 9.53.41.1 dev eth0
[root@thinkcentre-dom0 xen-unstable.hg]#

[root@thinkcentre-dom0 xen-unstable.hg]# netstat -rn
Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
9.53.41.0       0.0.0.0         255.255.255.0   U         0 0          0 eth0
169.254.0.0     0.0.0.0         255.255.0.0     U         0 0          0 eth0
0.0.0.0         9.53.41.1       0.0.0.0         UG        0 0          0 eth0
[root@thinkcentre-dom0 xen-unstable.hg]#

[root@thinkcentre-dom0 xen-unstable.hg]# brctl show
bridge name     bridge id               STP enabled     interfaces
xenbr0          8000.feffffffffff       no              peth0
                                                        vif0.0
                                                        vif1.0
[root@thinkcentre-dom0 xen-unstable.hg]#

dom0 dmesg output (tail):
e1000: eth0: e1000_watchdog_task: NIC Link is Up 100 Mbps Full Duplex
device vif0.0 entered promiscuous mode
bridge: can't decode speed from peth0: 65535
device peth0 entered promiscuous mode
xenbr0: port 1(vif0.0) entering learning state
xenbr0: topology change detected, propagating
xenbr0: port 1(vif0.0) entering forwarding state
e1000: peth0: e1000_watchdog_task: NIC Link is Up 100 Mbps Full Duplex
xenbr0: port 2(peth0) entering learning state
xenbr0: topology change detected, propagating
xenbr0: port 2(peth0) entering forwarding state
device vif1.0 entered promiscuous mode
xenbr0: port 3(vif1.0) entering learning state
xenbr0: topology change detected, propagating
xenbr0: port 3(vif1.0) entering forwarding state


---domU info---

thinkcentre-domU:~ # ifconfig -a
eth0      Link encap:Ethernet  HWaddr 00:16:3E:1A:8C:75
          inet addr:9.53.94.114  Bcast:9.53.94.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:5607 errors:0 dropped:0 overruns:0 frame:0
          TX packets:137 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:399014 (389.6 Kb)  TX bytes:5950 (5.8 Kb)

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:123 errors:0 dropped:0 overruns:0 frame:0
          TX packets:123 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:12845 (12.5 Kb)  TX bytes:12845 (12.5 Kb)



thinkcentre-domU:~ # netstat -rn
Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
9.53.94.0       0.0.0.0         255.255.255.0   U         0 0          0 eth0
169.254.0.0     0.0.0.0         255.255.0.0     U         0 0          0 eth0
127.0.0.0       0.0.0.0         255.0.0.0       U         0 0          0 lo
0.0.0.0         9.53.94.1       0.0.0.0         UG        0 0          0 eth0
thinkcentre-domU:~ #

pinging DOM0 from DOMU:
thinkcentre-domU:~ # ping 9.53.41.163
PING 9.53.41.163 (9.53.41.163) 56(84) bytes of data.
>From 9.53.94.114: icmp_seq=1 Destination Host Unreachable
>From 9.53.94.114 icmp_seq=1 Destination Host Unreachable
>From 9.53.94.114 icmp_seq=2 Destination Host Unreachable
>From 9.53.94.114 icmp_seq=3 Destination Host Unreachable

--- 9.53.41.163 ping statistics ---
6 packets transmitted, 0 received, +4 errors, 100% packet loss, time 5503ms
, pipe 3
thinkcentre-domU:~ #

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