IP Spoofs Logged on my SonicWALL

[DJX]

I'm not sure if this is a problem with my SonicWALL or with the TunnelBroker service.

I'm getting IP Spoof notices from my SonicWALL on my tunnel interface.
Example log entries:
15:51:57 Oct 04 2600:1009:8112 :9d0d::101 to 2607:f8b0:400d :c00::bc
15:50:38 Oct 04 2600:1009:8112 :9d0d::101 to 2a03:2880:2050 :3f07:face:b00c ::1

Any thoughts?

Thanks.