In this case if it works for you then don't bother to change. You could try 
if ($Route =~ /[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}/) {

# Do stuff

}

[download]
As far as I can tell my example isn't any better

In reply to Re: Regexp to match IP address by xorl
in thread Regexp to match IP address by Anonymous Monk

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