[KVM] network trouble only for Linux guests

[ltor]

Hello and of course thanks for Proxmox,
My two nodes Proxmox Cluster with many OpenVz VMs and two Windows 7 KVMs works perfectly and since two years...
Recently, a Linux KVM was "needed" so I try to create one but I must have done a so huge mistake that I can see it, so if someone can help me...

The HN concerned : only on network interface configured with a bridge vmbr0; Proxmox 1.9 is correctly updated.
The KVM concerned : a network interface with rtl8139 driver associated to vmbr0; the Linux OS is Debian 6.0.4 (minimal with X), the configuration was correctly done and I cannot ping the gateway

On the node :

# ifconfig
eth0      Link encap:Ethernet  HWaddr --I deleted it--
          inet6 addr: f--I deleted it--/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2355760321 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4219478663 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:732515065148 (682.2 GiB)  TX bytes:6180617287906 (5.6 TiB)
          Interrupt:36 Memory:d6000000-d6012800

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:12453957 errors:0 dropped:0 overruns:0 frame:0
          TX packets:12453957 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:5669029666 (5.2 GiB)  TX bytes:5669029666 (5.2 GiB)

tap117i0d0 Link encap:Ethernet  HWaddr --I deleted it--
          inet6 addr: --I deleted it--/64 Scope:Link
          UP BROADCAST RUNNING PROMISC MULTICAST  MTU:1500  Metric:1
          RX packets:28 errors:0 dropped:0 overruns:0 frame:0
          TX packets:104 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:500
          RX bytes:2135 (2.0 KiB)  TX bytes:8951 (8.7 KiB)

tap118i0d0 Link encap:Ethernet  HWaddr --I deleted it--
          inet6 addr: --I deleted it--/64 Scope:Link
          UP BROADCAST RUNNING PROMISC MULTICAST  MTU:1500  Metric:1
          RX packets:304701 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1096767 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:500
          RX bytes:23662167 (22.5 MiB)  TX bytes:274244911 (261.5 MiB)

tap121i0d0 Link encap:Ethernet  HWaddr --I deleted it--
          inet6 addr: --I deleted it--/64 Scope:Link
          UP BROADCAST RUNNING PROMISC MULTICAST  MTU:1500  Metric:1
          RX packets:314886 errors:0 dropped:0 overruns:0 frame:0
          TX packets:326454 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:500
          RX bytes:262302058 (250.1 MiB)  TX bytes:88347571 (84.2 MiB)

venet0    Link encap:UNSPEC  HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
          inet6 addr: fe80::1/128 Scope:Link
          UP BROADCAST POINTOPOINT RUNNING NOARP  MTU:1500  Metric:1
          RX packets:458606103 errors:0 dropped:0 overruns:0 frame:0
          TX packets:328994052 errors:0 dropped:41 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:559535363366 (521.1 GiB)  TX bytes:102179389119 (95.1 GiB)

vmbr0     Link encap:Ethernet  HWaddr b8:ac:6f:8e:20:f8
          inet addr:--I deleted it--  Bcast:--I deleted it--  Mask:255.255.255.224
          inet6 addr: --I deleted it--/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2029142385 errors:0 dropped:0 overruns:0 frame:0
          TX packets:847404501 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:669137980061 (623.1 GiB)  TX bytes:5940803552047 (5.4 TiB)

tap117i0d0 is the Linux KVM'one.


On the Guest, only eth0 et lo.

The Linux KVM can ping the HN and the HN can ping the Linux KVM...

My two Windows KVM works fine but the Linux one no, any idea ?

Thanks,

LT

 

[udo]

Hi,
try to find the issue with tcpdump on the host.
BTW: why do you use rtl8139? I prefer virtio for linux (or e1000) and e1000 for win.

Udo

 

[ltor]

try to find the issue with tcpdump on the host.

No tcpdump on this Debian 6 minimal and no network to install it ;-)

BTW: why do you use rtl8139? I prefer virtio for linux (or e1000) and e1000 for win.

I tried too with e1000 and nothing more, same trouble...very strange

is tap HW adress should be the same as the one declared on Proxmox ? That's not the case even for Windows guests ?

LT