Re: [Bugme-new] [Bug 7541] New: dhcp + suspend-to-RAM sometimes trashes the NIC

On Thu, 16 Nov 2006 23:37:18 -0800
bugme-daemon@bugzilla.kernel.org wrote:

http://bugzilla.kernel.org/show_bug.cgi?id=7541

           Summary: dhcp + suspend-to-RAM sometimes trashes the NIC
    Kernel Version: 2.6.17.7
            Status: NEW
          Severity: normal
             Owner: shemminger@osdl.org
         Submitter: joshua@openheartlogic.org


Most recent kernel where this bug did *NOT* occur: Sorry, dunno
Distribution: Debian
Hardware Environment: Fujitsu P-2040 laptop
Software Environment: dhcp-client 2.0pl5-19.4 (debian)
Problem Description:

I have hit this bug ever since I started using DHCP. Prior to DHCP, I never had
a problem with suspend to RAM.

Steps to reproduce:

My laptop travels from home to work and back. Every time I switch on, I run
"ifdown eth0" and "ifup eth0" to switch to the appropriate network configured
using DHCP. Usually, this works fine. Here's my ethernet chipset:

00:12.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL-8139/8139C/8139C+ (rev 10)

Anyway, sometimes, maybe once a week, something goes wrong and I get this error:

SIOCSIFFLAGS: No such device

The NIC still exists, see:

emit:/home/joshua# ifconfig eth0
eth0      Link encap:Ethernet  HWaddr 00:E0:00:8C:8B:8E
          inet addr:192.168.0.4  Bcast:192.168.0.255  Mask:255.255.255.0
          BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:739959 errors:4 dropped:5 overruns:3 frame:0
          TX packets:441931 errors:0 dropped:0 overruns:2 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:1059867013 (1010.7 MiB)  TX bytes:37902281 (36.1 MiB)
          Interrupt:9 Base address:0x4800

However, it's impossible to configure:

emit:/home/joshua# ifconfig eth0 132.147.1.109 up
SIOCSIFFLAGS: No such device
SIOCSIFFLAGS: No such device

Weird, huh?