192.168.1.2 br b8<r b16<r b24< R|R|R| D
255.255.255.0 br b8<r b16<r b24< R|R|R| D~r
& DDD 24>dpP 16>11111111& dpP 8>11111111& dpP 11111111& dpP
| DDD 24>dpP 16>11111111& dpP 8>11111111& dpP 11111111& dpP