node 1:
num_links = 1
10.67.19.168 -> 10.67.19.168

node 2:
num_links = 3
10.67.19.168 -> 10.67.19.210
10.67.18.84  -> 10.67.18.53
10.67.18.52  -> 10.67.18.88

node 3:
num_links = 3
10.67.19.168 -> 10.67.18.247
10.67.18.84  -> 10.67.19.238
10.67.18.52  -> 10.67.19.178