Patch-ID# 100159-01
Keywords: repeated, socket, eaddrinuse, sockets, ipintr, L1-A, sybase
Synopsis: SunOS 4.1, 4.1.1:system hangs using sockets in local loopback tcp-ip
Date: 05-Nov-90

SunOS release: 4.1 4.1.1

Unbundled Product:

Unbundled Release:

Topic: 

BugID's fixed with this patch: 1039406, 1046009

Architectures for which this patch is available: sun3, sun3x, sun4, sun4c,

Obsoleted by:

Problem Description:

Case 1:
	Problem occurs when Sybase dataserver is accessed locally (not from
        another machine) via tcp/ip from client processes. The bug would 
        probably occur on any server being heavily accessed locally. 
Case 2: 
	When opening up one connection and keeping it open, then 
	repeatedly opening and closing connections, every 3960-3980 
	connections, a connection fails with an "address already 
	in use" error.

Install patch as follows:

	Place the respective (depending the machine architecture - i.e.,what
	you see when you type 'arch -k') tcp_usrreq.o in /sys/sunX/OBJ
	
	Make a new kernel and reboot.

Please refer to the System and Network Administration portion of the manual
for "configuring and installing a custom kernel"