Code,Description,Reference
0,"registration accepted, IPv6 to be tunneled to HoA",[RFC5454]
1,"registration accepted, IPv6 to be tunneled to CoA",[RFC5454]
2-7,Unassigned (available for accept codes),
8,"registration rejected, reason unspecified",[RFC5454]
9,"registration rejected, administratively prohibited",[RFC5454]
10-255,Unassigned (available for reject codes),