Subject: TCP not sending data?
To: None <current-users@NetBSD.ORG>
From: Simon J. Gerraty <sjg@zen.void.oz.au>
List: current-users
Date: 03/02/1995 22:54:27
NetBSD-1.0/i386 at this end...

I'm playing with PPP to a Sun (pppd-2.1.2b) and generally all is well
(except for what looks like a bug with LCP echo processing).

However, twice in the last few minutes now, a telnet session via the
PPP link has "stopped" with the data apparently sitting in my tcp
send-Q:


root:2986$ netstat -n | head
Active Internet connections
Proto Recv-Q Send-Q  Local Address          Foreign Address        (state)
tcp        0     15  144.136.188.164.1074   192.148.147.3.423      ESTABLISHED
tcp        0      0  144.136.188.164.1022   144.136.188.165.513    ESTABLISHED
tcp        0      0  144.136.188.164.1023   144.136.188.211.513    ESTABLISHED
tcp        0      0  192.168.42.1.1048      192.168.42.2.6000      ESTABLISHED

Those 15 bytes have been there for several minutes. Pings to the host
in question, and all other telnet etc sessions are functioning happily
(this mail should fly down there in a sec...)

So, why would I have data stuck in a send-Q ?

--sjg