Assertion: router's ip address | /r/CapableOf | start with 192.168.x.x or 172.16-31.x.x
Facets:
value: always
type: TEMPORAL
Source sentences:
text: The private IP addresses always start with 192.168.x.x or 172.16-31.x.x or 10.x.x.x (those are the blocks of private IPs defined in RFC1918).