NLA2 address report 2001 Network Name: RESEARCHLAB-NET History: 01/Feb/2001 changed connection of sub-line to native from tunnel (main-line and sub-line use different IPv4 addresses depending on each ISP) 08/Aug/2001 changed tunnel end point. (changed IPv4 network topology) 17/Dec/2001 started to support ip6.arpa Network topology: Before Feb. pc6.otemachi.wide.ad.jp | | tunnel | tunnel (via Internet) IPv6 router ----------------+ | | --------+--------- IPv6 router-2 2001:200:127::/64 | --------+-------- 2001:200:127:100::/64 Feb. - Aug. pc6.otemachi.wide.ad.jp | | tunnel | Ethernet (v6 only) IPv6 router ----------+ IPv4 Router | | | --------+--------- IPv6 router-2 | 2001:200:127::/64 | | --+------------+- 2001:200:127:100::/64 After Aug. pc6.otemachi.wide.ad.jp | |v6 over v4 tunnel | IPv4/IPv6 router IPv4 Router | | | v4/v6| |v6 | | | | -----------+-- --+--------------+--- 2001:200:127::/64 2001:200:127:100::/64 Routing: RIPng Address Assign: 2001:200:127::/64 main-line 2001:200:127:100::/64 sub-line Trouble: none