Comment 15 for bug 332156

I'm having a (similar?) problem running KVMs on a Hardy server. Packets are intermittently dropped somewhere between layers 2 and 3, i.e. they are captured arriving at the network interface by tcpdump but they don't get recv'd by socket code or logged with iptables. Is this problem related somehow to Bug #332156? The KVMs have been upgraded to Karmic btw -- I don't know if that makes any difference. Details are below:

Physical Server:
Linux oghma 2.6.29 #3 SMP Tue Apr 14 18:17:50 EDT 2009 x86_64 GNU/Linux

[Ubuntu-Server 8.04.1 _Hardy Heron_ - Release amd64 (20080701)]

Dual quad-core processors 0-7 w/ 8 GB ram
processor : 7
vendor_id : GenuineIntel
cpu family : 6
model : 23
model name : Intel(R) Xeon(R) CPU E5405 @ 2.00GHz
stepping : 6
cpu MHz : 1994.655
cache size : 6144 KB
...

KVM Instances:
Linux airnet-1 2.6.31-22-server #63-Ubuntu SMP Thu Aug 19 01:25:01 UTC 2010 x86_64 GNU/Linux

Running Ubuntu-Server Karmic & iptables v1.4.4

processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 2
model name : QEMU Virtual CPU version 0.9.1
stepping : 3
cpu MHz : 1994.655
cache size : 2048 KB
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pse36 clflush mmx fxsr sse sse2 syscall nx
 lm up rep_good pni hypervisor
bogomips : 3989.31
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: