datacenters=A,B,C
distance.A-B=10
distance.A-C=100
distance.B-C=50
A.addresses=192.168.1.1,192.168.2.0/24
B.addresses=192.168.1.2,192.168.3.0/24
C.addresses=192.168.1.3,192.168.4.0/24,192.168.10.10