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Date: Tue, 12 Aug 2014 10:08:42 +0200 From: Hannes Frederic Sowa <hannes@...essinduktion.org> To: David Miller <davem@...emloft.net> Cc: netdev@...r.kernel.org, fw@...len.de Subject: Re: [PATCH net] tcp: don't allow syn packets without timestamps to pass tcp_tw_recycle logic On Tue, Aug 12, 2014, at 05:08, David Miller wrote: > From: Hannes Frederic Sowa <hannes@...essinduktion.org> > Date: Tue, 12 Aug 2014 02:21:36 +0200 > > > Thus this broken situation could easily arise by a Linux and Windows > > box sharing one IP address and talking to a tcp_tw_recycle enabled > > server. > > As Eric Dumazet mentioned, timewait recycling does not work if any > traffic goes through a NAT box. > > So this situation of two boxes "sharing one IP address" fundamentally > makes timewait recycling unusable. Exactly, I'll just throw away the SYN packet instead of opening a connection where we couldn't very if the preconditions for timewait recycling did not hold. Bye, Hannes -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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