Small tip if you're accessing Hamnet from a VPN, through an Internet Service Provider that does DNS64 and NAT64: put the following lines in /etc/gai.conf to prefer using IPv4 for Hamnet (you'll have connectivity issue otherwise).

precedence ::ffff:44.0.0.0/105 100
precedence ::ffff:44.128.0.0/106 100
precedence ::1/128 50
precedence ::/0 40
precedence 2002::/16 30
precedence ::/96 20
precedence 64:ff9b::/96 15
precedence ::ffff:0:0/96 10