current-users: IPv4 mapped IPv6 address problem.

Subject: IPv4 mapped IPv6 address problem.
To: None <current-users@netbsd.org>
From: Feico Dillema <feico@pasta.cs.uit.no>
List: current-users
Date: 08/11/2001 13:43:16

Hello,

On netbsd-current I tried to send UDP packets over a IPv6 socket using
IPv4 mapped IPv6 addresses (like: ::ffff:129.242.16.58). This does
not seem to work well. A tcpdump shows appropriate IPv4 packets on the
wire, but tcpdump show checksum errors:

13:31:57.641701 129.242.16.119.49155 > 129.242.16.105.53:  [bad udp cksum 87ac!] 16140+ AAAA? server.dillema.net. (16) (ttl 64, id 53060)

This is on -current of early July, NetBSD 1.5W.

Feico.