unknown: list before sort/uniq
unknown: 168.100.189.2
unknown: 168.100.189.2
unknown: 168.100.189.1
unknown: 168.100.189.3
unknown: 168.100.189.3
unknown: 168.100.189.3
unknown: 168.100.189.4
unknown: 168.100.189.1
unknown: 168.100.189.4
unknown: list after sort/uniq
unknown: 168.100.189.1
unknown: 168.100.189.2
unknown: 168.100.189.3
unknown: 168.100.189.4