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From: fredrik danerklint <fredan-freebsd@fredan.se>
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Date: Sun, 28 Aug 2011 23:03:57 +0200
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Subject: Re: Dummynet, pipe and ip6
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> Hi!
> 
> firewall_enable="YES"
> firewall_type="/etc/rc.firewall.local"
> 
> pipe 1 config bw 1Mbit/s
> add 50091 pipe 1 ip from any to any via igb4
> add 65000 allow ip from any to any
> 
> When pinging the interface igb4 on the ip4 address it does work.
> When pinging the interface igb4 on the ip6 address it doesn't work.
> 
> To get the ip6 address to respond at all I had to add:
> 
> sysctl net.inet.ip.fw.one_pass=0
> 
> Why?
> 
> Does the pipe really work with ip6 traffic in this configuration?

Have to add that pinging the other side of the interface does not work even 
with the sysctl setting....

-- 
//fredan