Subject: Re: Strange Intel gigabit card behaviour (wm)
To: None <>
From: Chuck Swiger <>
List: netbsd-users
Date: 06/08/2006 15:13:26
Joseph A. Dacuma wrote:
> Hi All!
> Is there anyone using an IBM R51 laptop? I have notice some error messages
> on its NIC, identified as....
> wm0 at pci1 dev 1 function 0: Intel i82541GI Mobile 1000BASE-T Ethernet,
> rev. 0
> 1) When the laptop is not connected to any network device say hub, switch
> or other LAN card it says:
> wm0: MDIC write timed out: phy 1 reg 31
> wm0: MDIC write timed out: phy 1 reg
> 2) With prolonged use, heavy network traffic (http, ssh and ftp transfers)
> this one came up:
> wm0: discarding oversize frame (len=-4)

Are you using VLAN tagging?  An off-by-4 error is suggestive, perhaps you need 
to enable some option for VLAN_MTU (1504) if such traffic is on your network?

Otherwise, are you using jumbo frames?  Try turning them off...