bin/42486: nfsd sometimes exits prematurely during port-scan - see freebsd bin/61084

[eravin%panix.com@localhost]

>Number:         42486
>Category:       bin
>Synopsis:       nfsd sometimes exits prematurely during port-scan - see 
>freebsd bin/61084
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Dec 21 04:25:01 +0000 2009
>Originator:     Ed Ravin
>Release:        5.0
>Organization:
PANIX Public Access Networks Corp
>Environment:
NetBSD util2.nyc.access.net 5.0 NetBSD 5.0 (PANIX-XEN3U-APPLIANCE) #1: Sun May  
3 20:27:43 EDT 2009  
root%juggler.panix.com@localhost:/misc3/obj/misc2/devel/netbsd/5.0/src/sys/arch/i386/compile/PANIX-XEN3U-APPLIANCE
 i386
>Description:
as described in freebsd bug bin/61084, the NetBSD nfsd may exit in response to 
a portscan, with the message:

   nfsd[318]: accept failed: Software caused connection abort


>How-To-Repeat:

>Fix:
a patch is provided in the FreeBSD bug referenced above, but I have not 
evaluated it, and it doesn't look like the FreeBSD people have either.