I found some tricks with getting a Nomad dev environment working reliably on Mac, particularly a Apple Silicon Mac.
I found the main problem was with how Docker Desktop doesn’t support IPv6, so if your Mac is connected to your network with a IPv6 address, Nomad will try to bound your containers to a IPv6 address which Docker Desktop can’t handle.
nomad agent -dev -bind 0.0.0.0 -network-interface=en0
unique.network.ip-address value, it should be an IPv4 address (if its a IPv6 address, check Step 1)
You might need to repeat Step 1 if you connect to a different Wi-Fi network.
For more information, see my Dev Environment notes.