Удалить всё лишнее кроме ip-v4?

Question

[ZeroMan]

Как удалить всё лишнее с файла такого вида:

Nmap scan report for 192.168.0.21
Host is up (0.18s latency).
Not shown: 1 filtered port
Some closed ports may be reported as filtered due to --defeat-rst-ratelimit
PORT   STATE SERVICE
22/tcp open  ssh

Nmap scan report for 192.168.0.29
Host is up (0.029s latency).
Not shown: 1 filtered port
Some closed ports may be reported as filtered due to --defeat-rst-ratelimit
PORT   STATE SERVICE
22/tcp open  ssh

Nmap scan report for 192.168.0.25
Host is up (0.15s latency).
Not shown: 1 filtered port
Some closed ports may be reported as filtered due to --defeat-rst-ratelimit
PORT   STATE SERVICE
22/tcp open  ssh

Чтоб был результат:
192.168.0.21
192.168.0.29
192.168.0.25

Answer 1

[dodo512]

Find: (?s).*?(\z|\d+\.\d+\.\d+\.\d+)
Replace: $1\n
https://regex101.com/r/f4tDrt/1