How to return ip that was rejected by mistake in iptable

Simply change to the -D option (if you do not mind entering the latter part) to delete the entry.

 iptables-DINPUT-s Wrong ip-j DROP

Alternatively, you can list (-L) with the --line-numbers option and delete the entry by line numbering.

iptables-LINPUT --line-number
iptables-DINPUT<Number>

Your answers are also helpful.

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