A while ago I posted the following issue about the Greenpacket hub:
https://community.three.co.uk/t5/Broadband/5G-hub-Greenpacket-Y5-210MU-dropping-wired-connection-aft...
My issues there went away after I replaced the PoE injector with a higher quality one, and ditched the Aero router for an Asus RT-AX59U. There are users int he above thread who claim TR069 is the culprit but I can confirm it never made any difference in my case - I had it enabled and didn't experience a single issue for months.
3 weeks ago, after 2+ months of uptime, all of a sudden I started to have constant pauses in connectivity, with the hub dropping the LAN connection for 10-20 seconds, then back up again, reoccurring every half an hour, sometimes more rarely, sometimes more often. 2 weeks of high frustration, was on the verge of ditching Three.
Long story short: I changed the hub mode from the default "IP passthrough" to "Routing". I set a DMZ address for 192.168.0.2, set my Asus router to use Static IP for WAN 192.168.0.2, disabled Greenpacket's Firewall, and enabled all ALGs.
This instantly resulted in a stable connection! It's been a week, so I decided to post this in case it can help others experiencing intermittent connections.
TO THREE ENGINEERS: It seems something funny started happening about 3 weeks ago on 3's network which deals with IP assignment and routing (my Greenpacket hub has received no update or change). Your network seems happy with the Greenpacket being the DHCP client, but wasn't happy with my Asus router when the Greenpacket was doing IP passthrough. I might still have the Greenpacket logs from the time the issue was still occurring
