[SASAG] Comcast & IPV6 + Dlink router - positive update

Bill Levering idbill at planx.com
Wed Nov 11 20:47:40 PST 2015

Ok… I got it working. Futz with it long enough and you can sometimes get it to work.

This page had some of the answers I was looking for:

This is what I ended up with:
allow incoming ICMPv6 (I’ve read other places that this isn’t required, dunno)
set IPv6 WAN DHCPv6 to stateless with prefix delegation (which I believe got the correct prefix auto added to my Advertisement Prefixes)

I was able to ferret out the correct LAN TCP/IP Address from the LAN status page.

The Remote prefix is 2001:558...
but the advertisement prefix is 2601:602…
the router still shows fe80::..

Maybe this has to do with how the router filters traffic, by forcing all traffic to go thru it.

Hopefully someone else can use this info.


> On Nov 10, 2015, at 3:53 PM, Bill Levering <idbill at planx.com> wrote:
> Maybe someone can shed light on this, with more info.
> I’m getting an IPV6 assignment of:
> 2001:558:600a:66:59a2:c996:56a6:7cb3
> but on the IPV6 LAN settings page, under TCP/IP Setup, it asks for the IPV6 Address. ?
> I thought that the address assigned to me via the ISP is the address that the router would be… and the 1st 4 segments (aka 64 bit prefix) would be shared among all the devices on my network, with the last 4 segments self assigned using various info and the mac address of the network card. With this in mind, I put the address above in the setting field.
> If this is not the case, then what IPV6 address should I use? (The router default is fec::1 )
> I have DHCPv6 enabled as ‘stateful’, which appears to be the only way that the IPV6 dns gets propagated to my machine.
> And the RA daemon is enabled with only the ‘Other’ flag on.
> I don’t have any Advertisement prefixes added because I assume that whatever matches the Router address would be advertised.
> Only if I add an Advertisement prefix does an IPV6 address get assigned to my machine… but I still get a link-local router address.
> Bill
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