The following reply was made to PR kern/36097; it has been noted by GNATS.

From: yamt@mwd.biglobe.ne.jp (YAMAMOTO Takashi)
To: gnats-bugs@NetBSD.org
Cc: kern-bug-people@netbsd.org, gnats-admin@netbsd.org,
	netbsd-bugs@netbsd.org
Subject: Re: kern/36097: http fetch stall in networking code
Date: Fri, 30 Mar 2007 19:31:53 +0900 (JST)

 > 11:05:13.212062 IP polaris.64773 > muumi.lnet.lut.fi.www: . ack 89330 win 33580 <nop,nop,sack sack 1 {90790:121450} >
 > 11:05:13.232197 IP muumi.lnet.lut.fi.www > polaris.64773: . 121450:122910(1460) ack 178 win 1728
 > 11:05:13.232204 IP polaris.64773 > muumi.lnet.lut.fi.www: . ack 89330 win 33580 <nop,nop,sack sack 1 {90790:122910} >
 > 11:05:38.588875 IP polaris.64773 > muumi.lnet.lut.fi.www: F 178:178(0) ack 89330 win 33580 <nop,nop,sack sack 1 {90790:122910} >
 > 11:05:38.859215 IP muumi.lnet.lut.fi.www > polaris.64773: . ack 179 win 1728
 
 i guess it's failing to transmit any packets with sack, or something like that.
 are you using any hw offloading?
 
 YAMAMOTO Takashi