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pf versions



Hello,
On an openbsd 3.7 install the following rule will work yet not on a 3.6,
is there a difference in the way the rule should be declared, or if pf
can be upgraded, how should I do this?
ext_if=xl0
ext_network=1.2.3.4/5
pass in on $ext_if proto tcp from any to $ext_network port {22,3389}
keep state ( max-src-conn 3, max-src-conn-rate 2/5, overload <abuse_src>
flush global )
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