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Date: Sat, 01 Nov 2014 22:18:23 -0700
From: Darren Pilgrim <list_freebsd@bluerosetech.com>
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To: Chris Inacio <nacho319@gmail.com>, freebsd-net@freebsd.org
Subject: Re: Help with IPv6 router gateway config, Comcast, DHCP, dnsmasq
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On 11/1/2014 8:03 PM, Chris Inacio wrote:
> Thank you for all your help.  You have indeed fixed my mistakes.
>
> I still have one more mistake, however, which is that my internal network
> interface isn't getting an IPv6 address, beyond link local.  When I added
> "inet6 accept_rtadv" to the config of re1 in rc.conf, the static
> "192.168.1.1 netmask"... broke.

Routers must not accept router advertisements from their downstream 
interfaces.  Your /etc/rc.conf should look something like this:

ipv6_cpe_wanif="re0"
ifconfig_re0="DHCP"
ifconfig_re0_ipv6="inet6 accept_rtadv -no_radr"
ifconfig_re1="inet 192.168.1.1/24"
ifconfig_re1_ipv6="inet6 -accept_rtadv"