>Number:         10233
>Category:       bin
>Synopsis:       ifconfig is trashing interface
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue May 30 07:58:01 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator:     Geoff Mottram
>Release:        1.4.2
>Organization:
Cactus Software
>Environment:
NetBSD firewall 1.4.2 NetBSD 1.4.2 (FIREWALL) #1: Sat May 27 11:59:41 PDT 2000 root@firewall:/usr/src/sys/arch/i386/compile/FIREWALL i386

>Description:
If you run the following command:

	ifconfig INTERFACE up mtu 1500

the interface is brought down and put into debug mode.  I suspect it is the "mtu 1500" portion of the command which is doing it.  In my case the interface is "we1" but I suspect it is not specific to the "we" driver and that any Ethernet interface will do.
>How-To-Repeat:
Type:

	ifconfig INTERFACE up mtu 1500

Substitute your Ethernet interface for INTERFACE.  Then run:

	ifconfig -a

to see what state the interface is in now (pay particular attention to the flags).
>Fix:
Reboot.
>Release-Note:
>Audit-Trail:
>Unformatted: