kern/56556: pppoe(4) panics

[Hauke Fath <hauke%Espresso.Rhein-Neckar.DE@localhost>]

>Number:         56556
>Category:       kern
>Synopsis:       Configuring pppoe(4) panics
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Dec 19 18:20:00 +0000 2021
>Originator:     Hauke Fath
>Release:        NetBSD 9.99.92
>Organization:
Falling Raindrops
>Environment:
	
	
System: NetBSD pizza.causeuse.org 9.99.82
Architecture: x86_64
Machine: amd64
>Description:

	On -current, 'ifconfig up'ing a pppoe interface panics the
	machine with a diagnostic assertion.

	A screenshot is at
	<ftp://ftp.causeuse.org/pub/NetBSD/pppoe-stacktrace.gif>.

	Unfortunately, the machine would neither dump on raid0b, nor
	on a usb disk.


	
>How-To-Repeat:

	On -current, configure a pppoe interface for use with a DSL
	modem. Watch the final 'ifconfig pppoe0 up' blow up.

	
>Fix:

	Yes, please - it's my internet gateway.

	

>Unformatted: