Intra-PoP Point-to-Point Links
Intra-PoP point-to-point links were numbered from the PoP prefix with a <SLA> = ‘01xx’, where‘xx’is a sequence number. This allowed for 256 point-to-point links per PoP with a /64 prefix.
An example of intra-PoP point-to-point prefixes which have a <SLA>=01xx for the Germany PoP with <PoP>=14 would be:
2001:0798:0014:0100::/64
2001:0798:0014:0101::/64
2001:0798:0014:0102::/64
2001:0798:0014:0103::/64
6NET PoP to NREN PoP Point-to-Point Links
The 6NET core routers were connected to the NREN routers as previously described. A special address range was selected for this type of point-to-point connectivity:
2001:0798:<PoP>:<SLA=02xx>::/56, where ‘xx’ is a sequence number.
The addresses utilised on the point-to-point links between the 6NET core and the NREN PoP had a prefix-length /64. Initially there was only one NREN PoP router attached to a 6NET PoP router.
The host part of the address was ‘::1’ for the 6NET core PoP side, and ‘::2’ for the NREN PoP side.

Inter-PoP point-to-point links were numbered from the Core prefix (2001:0798:00::/48) with a <SLA> = ‘00xx’ , where ‘xx’ is a sequence number. For the initial rollout of 6NET, this resulted in the following table:

