T1200H Bridging and IPv6 - Canadian TV, Computing and Home Theatre Forums
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post #1 of 4 (permalink) Old 2015-10-29, 11:49 AM Thread Starter
Join Date: Jan 2009
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T1200H Bridging and IPv6


I'm running a T1200H in bridging mode, with a Soekris net6501 running OpenBSD connected to port 1. The Soekris router is able to grab a v4 IP via DHCP and everything works as expected.

What I'm wondering is if anyone has had any success getting a v6 IP through Bridging mode? IPv6 is enabled on the Actiontec, and any computers that I connect behind it are assigned an internal v6 IP. However, no matter what I do, I can't seem to grab a public IPv6 through the bridge. Anyone have any ideas?

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post #2 of 4 (permalink) Old 2015-10-29, 01:30 PM
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Location: Winnipeg, MB
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Telus just started converting Central Offices to handle IPv6 in July and won't finish all the COs until early 2016. Other users have reported using IPv6 with bridge mode (using a Cisco router in one case.)

Telus is handing out /56 prefixes.

Source: http://forum.telus.com/thread/54774/...-connectivity-
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post #3 of 4 (permalink) Old 2016-01-20, 01:29 AM
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I have no issue grabbing IPv6 with my asus router sitting behind a bridged t1200.
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post #4 of 4 (permalink) Old 2016-01-22, 09:25 PM
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Location: Vancouver, BC
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It should work, and my area definitely has it as my modem can grab one, but once I bridge the modem and use my own router, that can't seem to get one. Not sure why. Sitting behind a bridged T2200H.

Edit: I found this rather technical explanation on the Telus forum.

Now if you want to use your own router, you can do what you mentioned by using the port 1 bridge mode on the Actiontec and connecting your device into this. It will work fine, however there are a few issues with a majority of 3rd party devices. In order for it to work your device must:

1. Only request a dhcp6-pd (So only send IA-PD in the dhcp6 solicit message). This is what the Actiontecs actually do.

2. If the device does request both an IA-NA, and an IA-PD in the solicit message, then it must conform to RFC 7550. We are not using IA-NA so in our dhcp Advertise message there will be a NoAddrAvail message for the IA-NA, and a prefix for the IA-PD.

#2 is where most of the 3rd party devices have issues. They don't handle this case and will usually reject the dhcp advertise message that is sent down and just go into and endless solicit loop.

Last edited by Gilles; 2016-01-22 at 10:48 PM.
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