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[9.105] DHCPv6 IA_PD support from the WAN link through Cable ISP

I recently enabled IPv6 on my network, as Comcast in my area supports it. As such, Comcast has allocated me an entire /64 Designated Prefix for use in my network. Since I also have various VPN networks and desires for future VLAN segmentation, I was told that Comcast would designate me a /60 if my router supported IA_PD (this was from a Comcast engineer on a Comcast forum), but I cannot find a way to do this on the UTM. I see this option on the internal side through DHCP from the UTM for internal systems, but I just want to be able to request this through my WAN link. First, does the latest 9.105 support this, and if not, when might it? Any assistance would be very appreciated.

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0 tdmomega over 11 years ago

So, no one knows how to do this or whether this is possible? Does anyone from Sophos monitor these forums? I just want to know what my options are.
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0 BarryG over 11 years ago

Hi, there aren't a lot of people here on the weekends... be patient.

A link to the Comcast forums might be helpful, btw.

Barry
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0 tdmomega over 11 years ago

My apologies for the lack of patience. Thanks for the comment, and I will hold tight until someone is able to address my question. Below is a little further information on this:

Information on the DHCPv6 RFC, including IA_PD: http://tools.ietf.org/html/rfc3633

Comcast IPv6 conversation on this: http://forums.comcast.com/t5/Home-Networking-Router-WiFi/IPv6-prefix-size-and-home-routing/td-p/1495933
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0 trollvottel over 11 years ago

With 9.105, IPv6 IA_PD is enabled by default if you configure the WAN interface as 'Cable Modem' interface type (DHCPv6). The UTM will pull a prefix from the ISP and it will be shown at the IPv6 -> Global tab in WebAdmin. You can then further split this prefix into several /64 and statically assign them to other UTM interfaces. Using the auto-renumbering feature, the UTM will modify the static address if the IA_PD prefix changes.
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