Strange src forwarding.

[Willem Jan Withagen]

I have the strange IPv6 forwarding messages in my security output.

The link-local ip-nr is not lokal on this system, so is there another system 
in my network that does this ipv6.
But I've not yet found a system with fc:ba as last bytes in my arp-table?

Can anybody tell me why I get these messages in my log?

--WjW

rack1.digiware.nl kernel log messages:
+++ /tmp/security.KCtiPXhd	2009-08-24 03:04:39.000000000 +0200
+cannot forward src fe80:1::213:2ff:fe2a:fcba, dst 2a01:138:a001:201::21, 
nxt 6, rcvif em0, outif em1
+cannot forward src fe80:1::213:2ff:fe2a:fcba, dst 2a01:138:a001:201::21, 
nxt 6, rcvif em0, outif em1
+cannot forward src fe80:1::213:2ff:fe2a:fcba, dst 2a01:138:a001:201::21, 
nxt 6, rcvif em0, outif em1