In which state, in terms of the IP side, is IP Router IPR/S 3.1.1 or IP Interface IPS/S 3.1.1 in the supplied state?
IP setting: DHCP then Auto IP. All five tunnel connections have the same physical address in the supplied state: 15.15.100
Also see: http://new.abb.com/low-voltage/products/intelligent-building-systems/abb-i-bus-knx/new-abb-i-bus-knx-ip-devices