>Number:         1280
>Category:       kern
>Synopsis:       ifconfig causes panic with AF_ISO and AF_CCITT
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    kern-bug-people (Kernel Bug People)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Jul 26 04:05:01 1995
>Last-Modified:
>Originator:     Alex Barclay
>Organization:
	British Telecommunications plc.
>Release:        NetBSD-current (24/7/95)
>Environment:
System: NetBSD portcullis.mavericks.bt.co.uk 1.0A NetBSD 1.0A (PORTCULLIS) #0: Tue Jul 25 12:43:03 1995 root@portcullis.mavericks.bt.co.uk:/amd/clouseau/disks/dk1/NetBSD-current/src/sys/arch/i386/compile/PORTCULLIS i386


>Description:
	ifconfig causes panic when used with iso and ns address families
	(so far this has happened with _both_ iso and ns on interfaces
	 ed and lo)

Example command:
	ifconfig ed0 ns 1234.1234
Kernel Messages:
	vm_fault(f8787a00,0,3,0) -> 1
	kernel: page fault trap, code=0
	stopped at _ns_control+0x199: movl %ebx, 0(%eax)
Stack Frame
	_ns_control
	_idp_userreq
	_if_ioctl
	_soo_ioctl
	_ioctl
	_syscall
		(syscall number 54)

	A similar behaviour is exhibited with iso (fault occurs
	in _iso_control, I seem to remember)

>How-To-Repeat:
	ifconfig with either ns or iso, never fails :-)
>Fix:
	Not sure on this. Am currently looking at it. What has been
	recently changed in this area?
>Audit-Trail:
>Unformatted: