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Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!nntp.coast.net!zombie.ncsc.mil!news.mathworks.com!newsfeed.internetmci.com!in2.uu.net!news.accessone.com!not-for-mail From: jdp@polstra.com (John Polstra) Newsgroups: comp.unix.bsd.freebsd.misc Subject: Re: FreeBSD crashes TCP/IP printer Date: 13 Dec 1995 16:28:45 -0800 Organization: Polstra & Co., Seattle, WA Lines: 24 Message-ID: <4anr3t$2k5@austin.polstra.com> References: <4andsa$l3@austin.polstra.com> NNTP-Posting-Host: austin.polstra.com Summary: Disable the TCP extensions In article <4andsa$l3@austin.polstra.com>, John Polstra <jdp@polstra.com> (that's me) wrote: > But, if I try to FTP to the printer from a machine running FreeBSD, > the printer immediately dies. The "ftp" command on the FreeBSD > side just hangs, and "netstat" shows that the connection is sitting > in the SYN_SENT state. From that point on, the printer is dead. > I have to power-cycle it to get it working again. I already got the answer by email: > This sounds like the printer doesn't support TCP extensions properly. Either > set tcp_extensions=NO in /etc/sysconfig and reboot, or type the corresponding > commands by hand: > > sysctl -nw net.inet.tcp.rfc1323=0 > sysctl -nw net.inet.tcp.rfc1644=0 Thanks, and a tip of the hat to Andrew Gordon, who figured this out for me. I owe him a beer! -- John Polstra jdp@polstra.com John D. Polstra & Co., Inc. Seattle, Washington USA "Self-knowledge is always bad news." -- John Barth