Valid route
After DNS resolves correctly, confirm your Mac has a route to the node. In Terminal, run (replace 522540 with your node number):
traceroute 522540.nodes.allstarlink.org
After a few seconds you should see hop-by-hop results. Your output will differ. If the last line shows your node’s IP address, the node is reachable.
Example:
traceroute to 522540.nodes.allstarlink.org (66.175.217.225), 64 hops max, 52 byte packets
1 172.16.0.1 (172.16.0.1) 118.333 ms 138.662 ms 118.618 ms
2 8.47.69.1 (8.47.69.1) 130.564 ms 156.421 ms 130.481 ms
...
5 li512-225.members.linode.com (66.175.217.225) 91.445 ms 88.611 ms 96.509 ms
If traceroute does not reach the node, check firewalls, VPN settings, and your Internet connection before continuing to UDP port testing.