Date: Thu, 16 Aug 2007 20:41:33 +0400 From: Eygene Ryabinkin <rea-fbsd@codelabs.ru> To: andre@freebsd.org Cc: freebsd-current@freebsd.org Subject: Re: TCP info spamming the logs and dmesg Message-ID: <20070816164133.GH988@void.codelabs.ru> In-Reply-To: <20070816163405.GG988@void.codelabs.ru> References: <19693.209.47.38.69.1187277248.squirrel@wettoast.dyndns.org> <20070816163405.GG988@void.codelabs.ru>
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Andre, good day. Thu, Aug 16, 2007 at 08:34:05PM +0400, Eygene Ryabinkin wrote: > Thu, Aug 16, 2007 at 11:14:08AM -0400, Mike Jakubik wrote: > > I recently did an update on my -CURRENT system, and i am now seeing a lot > > of TCP messages from the kernel which are spamming my dmesg and > > /var/log/messages. > > > > --- > > TCP: [217.81.3.76]:2978 to [99.244.15.156]:80; syncache_timer: Response > > timeout, retransmitting (1) SYN|ACK > > TCP: [58.254.32.40]:6926 to [99.244.15.156]:21; syncache_timer: > > Retransmits exhausted, giving up and removing syncache entry > > TCP: [58.254.32.40]:4342 to [99.244.15.156]:21; syncache_timer: Response > > timeout, retransmitting (3) SYN|ACK > > TCP: [209.47.38.69]:17523 to [99.244.15.156]:80 tcpflags 0x4<RST>; > > syncache_chkrst: Spurious RST without matching syncache entry (possibly > > syncookie only), segment ignored > > --- > > > > Is there any way to disable these, or have them log to a separate log? I had seen about four such questions for the last two weeks, so maybe it is time to patch tcp(4) manpage? The following is the very rough patch for it: --- tcp.4.orig 2007-08-16 20:35:06.000000000 +0400 +++ tcp.4 2007-08-16 20:37:33.000000000 +0400 @@ -259,6 +259,11 @@ Maximum .Tn TCP receive window. +.It Va log_debug +Enable (1) or disable (0) +.Tn TCP +stack debugging messages. +Default is 1, i.e., the logging is enabled. .It Va log_in_vain Log any connection attempts to ports where there is not a socket accepting connections. -- Eygene
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