in[46]_cksum problems

[Jaap Boender <jaapb%kerguelen.org@localhost>]

Hello,

I'm running netbsd-current/sparc64 (last cvs update on April 16) on a Sun 
Ultra60 with SMP enabled (yay, it works!), but I'm running into some problems 
with IP, both v4 and v6.

At some point when using FTP (the client), it panics with
"in4_cksum: mbuf too short for IP header". The trace:
in4_cksum, tcp_input_cksum, tcp_input, ip_input, ipintr, softint_execute, 
softint_overlay, lwp_userret, mi_userret, userret, trap.

For IPv6, it's the same ("in6_cksum: mbuf too short for IPv6 header"), only 
here it crashes when starting the rpcbind daemon. (it prints "Starting 
rpcbind.", and then it crashes.) The trace:
in6_cksum, icmp6_input, ip6_input, ip6intr, softint_execute, softint_overlay, 
lwp_userret, mi_userret, userret, syscall_plain.

  Jaap

P.S. I'm CC'ing this to port-sparc64, as I've no idea if it's a 
port-sparc64-(SMP)-related or a general problem.