Hi @ethelthefrog,
Please accept our apologies for the delayed response. We’re working diligently to reach every user who has experienced a port forwarding issue, and I’m very sorry that you’ve had to wait over a week for support. I assure you we’ll be more responsive now that we’ve assigned your ticket and are investigating.
The error you’re experiencing is due to a second layer of Network Address Translation (NAT), likely due to the fact that you have a second router in your setup (the Eero Pro 6) behind the Bell Home Hub 4000’s built-in router.
In this setup, your Core’s static IP address is unable to reach the internet without configuring your Home Hub to “pass through” the Core upstream to the internet. Your two routers are both performing the address translation that only one needs to perform. The vast majority of users have been able to avoid this double-router snag by configuring their modem/router combination in Bridge or IP Passthrough mode.
The Bell Home Hub 4000 unfortunately does not include this as a simple box-tick in the router settings. However, other users with the same modem have identified a workaround with the following steps:
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Factory reset the Home Hub 4000 and make sure your PPPoE credentials are gone from the Home Hub 4000 web interface
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Plug your Eero Pro 6 router directly into the Home Hub 4000 via ethernet. This will prompt the router to authenticate a PPPoE session with Bell. You don’t need to mess with VLANs or anything like that on the WAN interface of your router. The Home Hub 4000 should just pass along the PPPoE request to the Eero router, providing the WAN port of your Eero router with a public-facing IP address.
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You have now bypassed the built-in, redundant router in the Home Hub 4000 and are using your Eero to connect directly to the internet, instead of negotiating through the Home Hub 4000.
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Finally, place the Eero router in the DMZ (demilitarized zone) list on the Bell Home Hub 4000 in the Home Hub web administration page. Do NOT add the static IP address of your Core to the DMZ list of the Home Hub 4000 router under any circumstances.
What you have done in the above steps is configure your Eero router as an “access point” for the Home Hub, eliminating the second layer of network address translation (NAT).
For additional context, please see this other thread where other users with the same Bell Home Hub 4000 modem have come to the same solution: Bell Canada: Bell HH3000 aka Bell Hub 3000 Doesn't Offer Bridge Mode [See Staff Post for Workaround] - #8 by ipeverywhere
We’ll be standing by to support once you’ve had a chance to try this out.