Possible Double-NAT with Adtran 621x
Posted: Mon Jul 19, 2021 9:46 am
I've noticed since switching over to my sonic fiber that I can't connect to my work's primary VPN, which is known to be particularly finicky about double-NATing. (Our secondary VPN isn't as picky on this, so I'm fine on that count.) Looking at a traceroute to the VPN (or anywhere else for that matter), I see that the first hop after leaving my home network (running on a Ubiquiti stack) is 192.168.1.1 before getting onto Sonic's network, which I'm assuming is the ONT (haven't plugged directly into it to confirm yet). Documentation for my ONT is vanishingly scarce, but it seems like I should be able to switch it to bridge mode so that my second hop goes straight onto Sonic's network? Anyone else experienced this or similar?