Date: Fri, 1 Aug 2008 15:30:05 GMT From: Oliver <oliver@hotracer.de> To: freebsd-net@FreeBSD.org Subject: Re: kern/123881: [tcp] Turning on TCP blackholing causes slow localhost connections Message-ID: <200808011530.m71FU5et015816@freefall.freebsd.org>
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The following reply was made to PR kern/123881; it has been noted by GNATS. From: Oliver <oliver@hotracer.de> To: bug-followup@FreeBSD.org, tom@tomkarpik.com Cc: Subject: Re: kern/123881: [tcp] Turning on TCP blackholing causes slow localhost connections Date: Fri, 01 Aug 2008 17:05:10 +0200 I tried to reproduce this. You can log this issue when you also set net.inet.tcp.log_in_vain=2 the dmesg output shows for each connection attempt to sendmail TCP: [127.0.0.1]:58148 to [127.0.0.1]:113 tcpflags 0x2<SYN>; tcp_input: Connection attempt on closed port if you start inetd/auth (113) the sendmail deamon answers the same speed it does with net.inet.tcp.blackhole=0 If you don't want to use auth, sendmail can be configured to set the timeout for ident to 0s which results in ident checking disabled or you can reduce the default value of 5 seconds. O Timeout.ident=0s so tcp.blackhole works as expected and perhaps this can be closed. Greetings, Oliver
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