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The functions should only accept IPs with an optional port:
- IPs are valid: "a.b.c.d"
- IPs with port ("a.b.c.d#p") are allowed if the port is valid
- network ranges (CIDR) should be rejected
- empty ports ("a.b.c.d#") should be rejected
- all other strings should be rejected
Signed-off-by: RD WebDesign <github@rdwebdesign.com.br>