If you want an exact match you either want to anchor your regex somehow (... /,$host$/... probably in this case; something like /(?:^|\D)\Q$host\E(?:\D|$)/ more generally), or split your data and test with eq.

In reply to Re: How grep IP-addresses that is an exact match? by Fletch
in thread How grep IP-addresses that is an exact match? by Anonymous Monk

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