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diff --git pflogsumm-1.1.5/pflogsumm.pl pflogsumm-1.1.5/pflogsumm.pl
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index 36384dd..eb527d0 100755
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--- pflogsumm-1.1.5/pflogsumm.pl
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+++ pflogsumm-1.1.5/pflogsumm.pl
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@@ -1536,7 +1536,7 @@ sub gimme_domain {
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     # split domain/ipaddr into separates
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     # newer versions of Postfix have them "dom.ain[i.p.add.ress]"
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     # older versions of Postfix have them "dom.ain/i.p.add.ress"
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-    unless((($domain, $ipAddr) = /^([^\[]+)\[((?:\d{1,3}\.){3}\d{1,3})\]/) == 2 ||
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+    unless((($domain, $ipAddr) = /^([^\[]+)\[((?:\d{1,3}\.){3}\d{1,3}|[0-9a-f:]+)\]/) == 2 ||
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            (($domain, $ipAddr) = /^([^\/]+)\/([0-9a-f.:]+)/i) == 2) {
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 	# more exhaustive method
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         ($domain, $ipAddr) = /^([^\[\(\/]+)[\[\(\/]([^\]\)]+)[\]\)]?:?\s*$/;