teredo traffic on 6to4 relay ?

[Mark Pace Balzan]

Hi list,


I recently setup a private 6to4 relay (well aware that 6to4 is on the way out...).  it seem to work fine for 6to4 traffic, but am totally stumped as to why im also seeing what looks like teredo traffic also on this box.


Below is a sample from v6 netflow taken from the box  (there are many such flows in 2001:0::/32 both src and dst)

2001:0:5EF5:79FB:1C10:3591:A734:9CCF           Tu64     2001:0:5EF5:79FD:402:263A:BBD9:CCD9            Fa2/0    0x06 0xC5E6 0xC314 1


Any insight would be nice, if any of you have seen this before :)

Box is running Cisco ios 12.4, Tu64 is the 6to4 tunnel with anycast ip 192.88.99.1 used for 6to4.  F2/0 leads out to the v6 native internet.



Cheers

Mark