question to stf interface (current)

[6bone%6bone.informatik.uni-leipzig.de@localhost]

Hello,

I provide an 6to4 router and use the stf interface.

ifconfig stf0

stf0: flags=1<UP> mtu 1280
        inet6 2002:8b12:1921:: prefixlen 16

dmesg now reports regularly errors. For example,

nd6_storelladdr: bad gateway address type inet6: 2002:8b12:1921:: for dst 
2002:72f3:e21d:0:ad57:3c67:30ff:720e through interface vlan404

I think the packet to 2002:72f3:e21d:0:ad57:3c67:30ff:720e should be 
sendet to 114.243.226.29 via IPv4 and not via IPv6.

Here the interesting entries in the routing table:

Routing tables

Internet:
Destination        Gateway            Flags    Refs      Use    Mtu 
Interface
default            139.18.25.38       UG          -        -      -L ixg0

...

Internet6:
Destination                        Gateway                        Flags 
Refs      Use    Mtu Interface

default                            2001:638:c:a00a::1             UG 
-        -      -  vlan404
2002::/16                          2002:8b12:1921::               U 
-        -      -  stf0
2002:8b12:1921::                   link#30                        UHL 
-        -      -  lo0


In my opinion, the package to 2002:72f3:E21D:0:ad57:3c67:720e:30ff should 
be sent to the interface stf0. There will it be encapsulated in 
IPv4 and should be send via the IPv4 default route to Interface ixg0. 
The package must not be sent to the interface vlan404.

The message is only for packets with the sender 2002:8B12:1921:: (the 
router itself). If I send a ping packet to the affected addresses from the 
router everything works as fine. I can not force the fault so.


Does anyone have an idea where the messages could come from?


Thank you for your efforts


Regards
Uwe