kern/49323: tlp(4) on Microsoft Windows Server 2008 R2's Hyper-V VM stops

[ryoon%NetBSD.org@localhost]

>Number:         49323
>Category:       kern
>Synopsis:       tlp(4) on Microsoft Windows Server 2008 R2's Hyper-V VM stops
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Oct 26 21:40:00 +0000 2014
>Originator:     Ryo ONODERA
>Release:        NetBSD 7.99.1
>Organization:
	
>Environment:
	
	
System: NetBSD/amd64 7.0_BETA GENERIC.201410071930Z from nyftp
Architecture: x86_64
Machine: amd64
>Description:
tlp(4) generates the following error
on Hyper-V with legacy network adapter of Microsoft Windows Server 2008 R2.

tlp0: receiving ring overrun

I have 5 this message and 3 days uptime, and NetBSD this VM stops receiving
any TCP/IP packets.

tlp(4) part of dmesg is here.

tlp0 at pci0 dev 10 function 0: DECchip 21140A Ethernet, pass 2.0
tlp0: interrupting at irq 11
tlp0: Ethernet address XX:XX:XX:XX:XX:XX
tlp0: 100baseTX, 100baseTX-FDX

	
>How-To-Repeat:
Run NetBSD/amd64 7.0_BETA with legacy network adapter
on Hyper-V of Windows Server 2008 R2, and wait 3 days.
	
>Fix:
	
I have no idea.

>Unformatted: