Subject: kern/3812: system can crash on "ipnat -F"
To: None <>
From: Matthias Scheler <>
List: netbsd-bugs
Date: 06/29/1997 14:50:24
>Number:         3812
>Category:       kern
>Synopsis:       system can crash on "ipnat -F"
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people (Kernel Bug People)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Jun 29 06:05:01 1997
>Originator:     Matthias Scheler
Matthias Scheler                      
>Release:        970624
System: NetBSD lyssa 1.2G NetBSD 1.2G (LYSSA) #0: Wed Jun 25 12:04:42 MEST 1997 tron@lyssa:/usr/src/sys/arch/i386/compile/LYSSA i386

After being used as IP NAT gateway for about 50 hosts for two days my
system had a lot of dead IP NAT connection in its table (as shown by
"ipnat -l"). When I tried to flush them with "ipnat -F" the system
freezed immediatley and I had to hard reset it. The IP NAT configuration
looked like this:

map de0 ->

Use a host as IP NAT gateway for a while and enter "ipnat -F".

Sorry, no idea.