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Date: Tue, 28 Aug 2012 06:31:44 -0500
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From: Mark Felder <feld@feld.me>
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Subject: ipv6 connection hang
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Hi all,

mwi1# uname -a
FreeBSD mwi1.coffeenet.org 9.1-PRERELEASE FreeBSD 9.1-PRERELEASE #5  
r239731: Mon Aug 27 09:53:18 CDT 2012      
root@mwi1.coffeenet.org:/usr/obj/usr/src/sys/GENERIC  amd64

My ipv6 connections hang for several seconds when this scrub rule is  
enabled:

scrub all reassemble tcp no-df random-id

This really agitates my browser and email client making them nearly  
useless at times. Disabling that rule makes ipv6 connections respond  
instantly as expected. Is this a known regression? My network interface is  
using the re(4) driver.


Thanks!