kern/39900: can't assign 0.0.0.0 inet address

[martin%NetBSD.org@localhost]

>Number:         39900
>Category:       kern
>Synopsis:       can't assign 0.0.0.0 inet address
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Nov 12 06:50:00 +0000 2008
>Originator:     Martin Husemann
>Release:        NetBSD 5.99.01
>Organization:
The NetBSD Foundation, Inc
>Environment:
System: NetBSD night-owl.duskware.de 5.99.01 NetBSD 5.99.01 (NIGHT-OWL) #40: 
Wed Nov 12 06:41:37 CET 2008 
martin%night-owl.duskware.de@localhost:/usr/src/sys/arch/i386/compile/NIGHT-OWL 
i386
Architecture: i386
Machine: i386
(userland slightly older)

>Description:
The standard address assignement for dynamic IP configurations with pppoe
or ippp does not work any more:

ifconfig pppoe0 0.0.0.0 0.0.0.1

silently(!) fails to set inet addresses (adding "inet" on the command line does
not help).

>How-To-Repeat:
s/a
>Fix:
we could add a special commnd/ioctl to switch the interfaces to dynamic IP
mode, but this used to be the documented way to set things up for years.