Netbsd 5 no traceroute from wireless

[David Wetzel <dave%turbocat.de@localhost>]

Hi,

from my normal vr0 ethernet traceroute works:

dave@alix>traceroute www.netbsd.org
traceroute to www.netbsd.org (204.152.190.12), 64 hops max, 40 byte  
packets
 1  172.16.2.1 (172.16.2.1)  0.311 ms  0.246 ms  0.238 ms
 2  XXXX (172.16.1.1)  5.471 ms  2.273 ms  7.972 ms
 3  xx.yy.12.1 (xx.yy.12.1)  35.571 ms  32.116 ms  46.935 ms
...

But this does not:

dave@alix>traceroute -i ath0 www.netbsd.org
traceroute to www.netbsd.org (204.152.190.12), 64 hops max, 40 byte  
packets
 1  * * *
^C

any ideas?

Machines using the wireless (my netbsd is a router) can do ping but  
not traceroute.

ipnat.conf:

map vr0 0.0.0.0/0 -> 0/32 proxy port ftp ftp/tcp
map vr0 0.0.0.0/0 -> 0/32 portmap tcp/udp 40000:60000
map vr0 0.0.0.0/0 -> 0/32


David