Subject: ipv6 over ipv4 troubles.
To: None <netbsd-help@netbsd.org>
From: Nigel Reed <nigel@nelgin.nu>
List: netbsd-help
Date: 02/06/2001 01:38:18
Greets all.

I'm trying to configure the ipv6 over ipv4 tunnel using addresses from
www.freenet6.net

Background, the kernel has gif and inet6 compiled into it.

bash-2.04# ifconfig gif0 24.10.20.37 206.123.31.102
This configures the IP address to the tunnel

bash-2.04# ifconfig gif0 inet6 3ffe:b00:c18:1fff:0:0:0:4dd \
3ffe:b00:c18:1fff:0:0:0:4dc prefixlen 128 alias
This confiures the ip address as an alias

bash-2.04# route add -inet6 default 3ffe:b00:c18:1fff:0:0:0:4dd
Adds a route.

netstat -rn
[snip]
default                       3ffe:b00:c18:1fff::4dd    UGS         0        2
    -  gif0
[snip]
3ffe:b00:c18:1fff::4dc        3ffe:b00:c18:1fff::4dd    UH          0        0
 1280  gif0
3ffe:b00:c18:1fff::4dd        ::1                       UH          1        0
33228  lo0

bash-2.04# ifconfig gif0
gif0: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
        inet 24.10.20.37 -> 206.123.31.102 netmask 0xff000000
        inet6 3ffe:b00:c18:1fff::4dd -> 3ffe:b00:c18:1fff::4dc prefixlen 128

Everything looks OK, however when I try to ping www.kame.net (which people
have suggested I try...)

bash-2.04# ping6 www.kame.net
PING6(56=40+8+8 bytes) 3ffe:b00:c18:1fff::4dd --> 3ffe:501:4819:2000:5054:ff:fed
c:50d2
ping6: sendmsg: Message too long
ping6: wrote www.kame.net 16 chars, ret=-1
ping6: sendmsg: Message too long
ping6: wrote www.kame.net 16 chars, ret=-1
^C
--- www.kame.net ping6 statistics ---
2 packets transmitted, 0 packets received, 100% packet loss


Any ideas what I might be doing wrong here?

Regards
Nigel

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