i386/166894: Realtek RTL8100 keeps droping link

[Dean Catcher]

>Number:         166894
>Category:       i386
>Synopsis:       Realtek RTL8100 keeps droping link
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-i386
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Apr 12 21:50:11 UTC 2012
>Closed-Date:
>Last-Modified:
>Originator:     Dean Catcher
>Release:        FreeBSD 9.0 i386
>Organization:
na
>Environment:
FreeBSD fire3 9.0-RELEASE FreeBSD 9.0-RELEASE #0
>Description:
See this thread: http://forums.freebsd.org/showthread.php?t=31167

On GENERIC kernel, 9.0 i386, the rl0 card 

a) isn't detected for install (boot off CD)

b) after install, it is detected and works, but link keeps bouncing.

Card info:

rl0 at pci0:1:6:0: class=0x020000 card=0x7148109f chip=0x813910ec rev=0x10 hdr=0x00
    vendor     = 'Realtek Semiconductor Co., Ltd.'
    device     = 'RTL-8139/8139C/8139C+'
    class      = network
    subclass   = ethernet
    cap 01[50] = powerspec 2  supports D0 D1 D2 D3  current D0


in messages (when sending data though nic):

rl0: link state changed to DOWN
rl0: link state changed to UP
rl0: link state changed to DOWN
rl0: link state changed to UP
rl0: link state changed to DOWN
rl0: link state changed to UP
rl0: link state changed to DOWN
rl0: link state changed to UP

>How-To-Repeat:
Install 9.0 and send data over the rl0 link.


>Fix:
unknown.  Temporarily using different nic.



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