Does the RA service show it's advertising the correct prefix?  I can do one better - Here's an RA packet I capped with wireshark: Frame 2: 174 bytes on wire (1392 bits), 174 bytes captured (1392 bits) on interface 0Ethernet II, Src: Netgear_ed:1d:32

If I can, I'll give it a shot. Things like removing any static addresses will have to wait till I can reboot without causing trouble for the office.

Here's the routing table as it is right now. There are artifacts from my last round of attempts, but the routes from the gateway are there.   Interface 12 is WAN, 13 is LAN, 14 and up are VPN, 6-to-4 and direct access interfaces that aren't doi

Well, I know there would be problems if the prefix changes (though the gateway does allow me to set a /56, I don't know how static it is), but now I'm determined to make it work.   Windows is getting the default routes from the gateway's RA, includin

Thanks, but I've read it.  Looks like the heart of the issue is the gateway's filtering policy.  It rejects packets who's source /64 doesn't match it's /64 when it should be filtering according to the assigned /56.  So, instead of the 265 subnets it

@train_wreck wrote: My guess is that the vast majority of customers who purchase "Comcast Business" in the HFC (coaxial-based) form are likely home businesses/small businesses, often with no dedicated IT staff (or a rather small one). Customers who w

I got some helpful answers in this thread - http://forums.businesshelp.comcast.com/t5/IPV6/Dual-Stack-on-SMC-D3GCCR-and-Cisco-DPC3939B/m-p/27797/highlight/false#M552 Looks like getting a useful prefix delegation is only possible with the Netgear gate

train_wreck wrote:mltorley wrote:I was just told by Comcast that they have no equipment at all that will properly handle IPv6 and static IP4, and that my only option to get a prefix shorter than /64 was to buy a modem and lose my office's static IP4

Can I add that UPnP functionality on the gateway would be irrelevant in TBM?  Only the firewall/router  needs it enabled, regardless of whether it's builtin to the gateway or a separate personal device.  In TBM, all traffic passes through, regardless