>Number:         25414
>Category:       kern
>Synopsis:       kernel panic when connecting to IPv6 hosts
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat May 01 04:20:01 UTC 2004
>Closed-Date:
>Last-Modified:
>Originator:     Emre Yildirim
>Release:        NetBSD 2.0_BETA April 27, 2004
>Organization:
n/a
>Environment:
System: NetBSD cultivar.asper.org 2.0_BETA NetBSD 2.0_BETA (GENERIC) #0: Tue Apr
27 10:30:15 UTC 2004 autobuild@tgm.netbsd.org:/autobuild/netbsd-2
0/i386/OBJ/autobuild/netbsd-2-0/src/sys/arch/i386/compile/GENERIC i386
Architecture: i386
Machine: i386
>Description:
The machine instantly crashes when I try to connect to a IPv6 host.  This
started happening a few weeks ago (with a April 7 snapshot), when I tried to
connect to a IPv6 enabled IRC server using irssi.

Here's a backtrace:

(gdb) target kcore /var/crash/netbsd.6.core
panic: trap
#0  0x00000001 in ?? ()
(gdb) bt
#0  0x00000001 in ?? ()
#1  0xc03fd87b in cpu_reboot ()
#2  0xc0374688 in panic ()
#3  0xc0407ddd in trap ()
#4  0xc0102ebb in calltrap ()
#5  0xc0137860 in frpr_tcp6 ()
#6  0xc013bc3d in frpr_ipv6hdr ()
#7  0xc0137a61 in fr_makefrip ()
#8  0xc0152a45 in fr_checkicmp6matchingstate ()
#9  0xc0151968 in fr_stlookup ()
#10 0xc0151dc7 in fr_checkstate ()
#11 0xc01386e5 in fr_check ()
#12 0xc013d4bb in fr_check_wrapper6 ()
#13 0xc03c7c93 in pfil_run_hooks ()
#14 0xc015f39a in ip6_input ()
#15 0xc015f281 in ip6intr ()
#16 0xc0102b6d in Xsoftnet ()
(gdb)

>How-To-Repeat:

Fire up irssi and do /server dev6.ircnet.ee

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: