kern/41679: re0: watchdog timeout on qemu/kvm

[netbsd%gavlehandel.se@localhost]

>Number:         41679
>Category:       kern
>Synopsis:       Lots of re0: watchdog timeout using qemu/kvm
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Jul 07 11:50:00 +0000 2009
>Originator:     netbsd%gavlehandel.se@localhost
>Release:        NetBSD 5.0_STABLE 
>NetBSD-daily/netbsd-5/200907040000Z/iso/i386cd.iso
>Organization:
        
>Environment:
        
        
System: NetBSD 5.0_STABLE NetBSD 5.0_STABLE (GENERIC) #0: Sat Jul 4 10:51:45 
UTC 2009 
builds%b6.netbsd.org@localhost:/home/builds/ab/netbsd-5/i386/200907040000Z-obj/home/builds/ab/netbsd-5/src/sys/arch/i386/compile/GENERIC
 i386
Architecture: i386
Machine: i386
re0 at pci0 dev 3 function 0: RealTek 8139C+ 10/100BaseTX (rev. 0x20)
re0: interrupting at irq 11
re0: Ethernet address 54:52:00:02:9f:3e
re0: using 64 tx descriptors
rlphy0 at re0 phy 0: Realtek internal PHY
rlphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto

>Description:
Using this kernel on kvm 1:84+dfsg-0ubuntu12 / qemu 0.10.0-1ubuntu1
gives lots of re0: watchdog timeout in the logs, and ssh access to the 
virtual machine is nearly unusable if I download a file at the same time.
>How-To-Repeat:
Install this netbsd snapshot on a up-to-date ubuntu (9.04) and try to use
network, with default settings.
>Fix:
I have an idea about this, the emulated ethernet may be too slow some times,
triggering this watchdog.