Date: Fri, 12 Aug 2005 14:34:30 +0900 (JST) From: Noritoshi Demizu <demizu@dd.iij4u.or.jp> To: jha miku <jha0147@yahoo.com> Cc: freebsd-net@freebsd.org Subject: Re: Question regd timestamp option Message-ID: <20050812.143430.37456105.Noritoshi@Demizu.ORG> In-Reply-To: <20050812020814.30073.qmail@web34105.mail.mud.yahoo.com> References: <20050812020814.30073.qmail@web34105.mail.mud.yahoo.com>
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> Are there other situations when timestamp gets disabled? In case of active open and net.inet.tcp.rfc1323 is set to non-zero, one possibility is TCP_NOOPT is turned on by setsockopt(). But I do not know which applications use TCP_NOOPT. Regards, Noritoshi Demizu > From: jha miku <jha0147@yahoo.com> > To: freebsd-net@freebsd.org > Subject: Question regd timestamp option > Date: Thu, 11 Aug 2005 19:08:13 -0700 (PDT) > > In case of active open, the SYN segments always have > timestamp enabled, since the RFC flg is set. But, > Currently, I am seeing some SYN segments without > timestamp option. > > The only condition that I am aware of when timestamp is > disabled, is on sending the 3rd SYN in retransmit code > when the timestamp gets disabled. > looking at the tcpdump, it is unclear why the SYNs are > sent during active open without timestamp option. > > Are there other situations when timestamp gets > disabled? > Please let me know. > Thanks. > > ____________________________________________________ > Start your day with Yahoo! - make it your home page > http://www.yahoo.com/r/hs > > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"
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