s/(\d{1,3}\.\d{1,3})\.233(\.\d{1,3})/$1.234$2/
Will do what you want in PCRE
5
solved Swap multiple parts of an IP using a Perl REGEX [duplicate]
s/(\d{1,3}\.\d{1,3})\.233(\.\d{1,3})/$1.234$2/
Will do what you want in PCRE
5
solved Swap multiple parts of an IP using a Perl REGEX [duplicate]