BSR64000 - DHCPv6 Snoop error

Hi for All,

My log file is full of following errors:

bsr64000:7A#show log
Preparing log file for reading ...
[01/23-12:01:20.53- 00:EVT]-E-USDATA.252 US Pkts dropped. DHCPv6 Snoop error: ip6Dst ff02::1:2 ip6Src fe80::258f:f10e:ba87:6168 tid 0xde
[01/23-12:00:48.53- 00:EVT]-E-USDATA.252 US Pkts dropped. DHCPv6 Snoop error: ip6Dst ff02::1:2 ip6Src fe80::258f:f10e:ba87:6168 tid 0xde
[01/23-12:00:32.54- 00:EVT]-E-USDATA.252 US Pkts dropped. DHCPv6 Snoop error: ip6Dst ff02::1:2 ip6Src fe80::258f:f10e:ba87:6168 tid 0xde
[01/23-12:00:24.54- 00:EVT]-E-USDATA.252 US Pkts dropped. DHCPv6 Snoop error: ip6Dst ff02::1:2 ip6Src fe80::258f:f10e:ba87:6168 tid 0xde
[01/23-12:00:20.54- 00:EVT]-E-USDATA.252 US Pkts dropped. DHCPv6 Snoop error: ip6Dst ff02::1:2 ip6Src fe80::258f:f10e:ba87:6168 tid 0xde
[01/23-12:00:18.55- 00:EVT]-E-USDATA.252 US Pkts dropped. DHCPv6 Snoop error: ip6Dst ff02::1:2 ip6Src fe80::258f:f10e:ba87:6168 tid 0xde
[01/23-12:00:17.55- 00:EVT]-E-USDATA.252 US Pkts dropped. DHCPv6 Snoop error: ip6Dst ff02::1:2 ip6Src fe80::258f:f10e:ba87:6168 tid 0xde
[01/23-11:54:13.53- 00:EVT]-E-USDATA.252 US Pkts dropped. DHCPv6 Snoop error: ip6Dst ff02::1:2 ip6Src fe80::258f:f10e:ba87:6168 tid 0xde
[01/23-11:53:41.52- 00:EVT]-E-USDATA.252 US Pkts dropped. DHCPv6 Snoop error: ip6Dst ff02::1:2 ip6Src fe80::258f:f10e:ba87:6168 tid 0xde
[01/23-11:53:25.48- 00:EVT]-E-USDATA.252 US Pkts dropped. DHCPv6 Snoop error: ip6Dst ff02::1:2 ip6Src fe80::258f:f10e:ba87:6168 tid 0xde
[01/23-11:53:17.48- 00:EVT]-E-USDATA.252 US Pkts dropped. DHCPv6 Snoop error: ip6Dst ff02::1:2 ip6Src fe80::258f:f10e:ba87:6168 tid 0xde
[01/23-11:53:13.48- 00:EVT]-E-USDATA.252 US Pkts dropped. DHCPv6 Snoop error: ip6Dst ff02::1:2 ip6Src fe80::258f:f10e:ba87:6168 tid 0xde
[01/23-11:53:11.48- 00:EVT]-E-USDATA.252 US Pkts dropped. DHCPv6 Snoop error: ip6Dst ff02::1:2 ip6Src fe80::258f:f10e:ba87:6168 tid 0xde
[01/23-11:53:10.48- 00:EVT]-E-USDATA.252 US Pkts dropped. DHCPv6 Snoop error: ip6Dst ff02::1:2 ip6Src fe80::258f:f10e:ba87:6168 tid 0xde
[01/23-11:47:06.49- 00:EVT]-E-USDATA.252 US Pkts dropped. DHCPv6 Snoop error: ip6Dst ff02::1:2 ip6Src fe80::258f:f10e:ba87:6168 tid 0xde
[01/23-11:46:34.48- 00:EVT]-E-USDATA.252 US Pkts dropped. DHCPv6 Snoop error: ip6Dst ff02::1:2 ip6Src fe80::258f:f10e:ba87:6168 tid 0xde
[01/23-11:46:18.48- 00:EVT]-E-USDATA.252 US Pkts dropped. DHCPv6 Snoop error: ip6Dst ff02::1:2 ip6Src fe80::258f:f10e:ba87:6168 tid 0xde
[01/23-11:46:10.47- 00:EVT]-E-USDATA.252 US Pkts dropped. DHCPv6 Snoop error: ip6Dst ff02::1:2 ip6Src fe80::258f:f10e:ba87:6168 tid 0xde
[01/23-11:46:06.47- 00:EVT]-E-USDATA.252 US Pkts dropped. DHCPv6 Snoop error: ip6Dst ff02::1:2 ip6Src fe80::258f:f10e:ba87:6168 tid 0xde
[01/23-11:46:04.47- 00:EVT]-E-USDATA.252 US Pkts dropped. DHCPv6 Snoop error: ip6Dst ff02::1:2 ip6Src fe80::258f:f10e:ba87:6168 tid 0xde
[01/23-11:46:03.48- 00:EVT]-E-USDATA.252 US Pkts dropped. DHCPv6 Snoop error: ip6Dst ff02::1:2 ip6Src fe80::258f:f10e:ba87:6168 tid 0xde
[01/23-11:39:59.44- 00:EVT]-E-USDATA.252 US Pkts dropped. DHCPv6 Snoop error: ip6Dst ff02::1:2 ip6Src fe80::258f:f10e:ba87:6168 tid 0xde

Please explain:

- What are this errors?
- How can I eliminate this?

Thx.

Regards, Ja