Subject: kern/3547: ipnat fails with multiple outgoing interfaces
To: None <>
From: Martin Husemann <>
List: netbsd-bugs
Date: 04/27/1997 18:12:42
>Number:         3547
>Category:       kern
>Synopsis:       ipnat fails when doing the same mapping for multiple interfaces
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people (Kernel Bug People)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Apr 27 09:20:02 1997
>Originator:     Martin Husemann
>Release:        current as of Apr 22
System: NetBSD 1.2D NetBSD 1.2D (RUMOLT) #0: Sun Apr 27 19:36:03 MEST 1997 i386


Try to map a host from an internal network to its official ip address
on two outgoing interfaces, as in

map ppp0 ->
map ipi0 ->

The second line fails in the ioctl setting the NAT with "Adress exists".
Not in every setup there is a single "outside".