kern/100499: vr interface stops transmitting

[hans meyer]

>Number:         100499
>Category:       kern
>Synopsis:       vr interface stops transmitting
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Jul 18 22:30:31 GMT 2006
>Closed-Date:
>Last-Modified:
>Originator:     hans meyer
>Release:        6.1-Stable
>Organization:
prowip telecom
>Environment:
FreeBSD apb-fru.frutalnet.com.br 6.1-STABLE FreeBSD 6.1-STABLE #0: Wed Jul 12 15:26:09 BRT 2006     hm at apb-fru.frutalnet.com.br:/usr/obj/usr/src/sys/wipcentral.kernel  amd64

>Description:
after some ocasional events like

Jul 18 19:02:40 apb-fru kernel: vr0: link state changed to DOWN
Jul 18 19:02:43 apb-fru kernel: vr0: link state changed to UP

the interface stops transmitting and need a complete power-off in order to come back. Reboot does not resolve the issue. It happens under load or not and happens with or without polling

vr0: <VIA VT6102 Rhine II 10/100BaseTX> port 0xe800-0xe8ff mem 0xee021000-0xee0210ff irq 23 at device 18.0 on pci0
miibus0: <MII bus> on vr0
ukphy0: <Generic IEEE 802.3u media interface> on miibus0
ukphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
vr0: Ethernet address: 00:16:ec:10:c0:22

vr0 at pci0:18:0:  class=0x020000 card=0x01021106 chip=0x30651106 rev=0x78 hdr=0x00
vendor   = 'VIA Technologies Inc'
device   = 'VT6102 Rhine II PCI Fast Ethernet Controller'
class    = network
subclass = ethernet

>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: