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Simplify the IPv4 regular expression

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David Kerr 2020-06-30 13:29:10 -04:00 committed by Richard Hansen
parent 5da22a8a69
commit 0a999577c7
1 changed files with 1 additions and 1 deletions
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ddclient.in
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@ -2342,7 +2342,7 @@ sub is_ipv4 {
## extract_ipv4() extracts the first valid IPv4 address from the given string
######################################################################
sub extract_ipv4 {
(shift // '') =~ /\b((?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?))\b/ai;
(shift // '') =~ /\b((?:(?<octet>25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(?&octet))\b/a;
return $1;
}