- [::1]:port // v6 localhost device (loop back)
- localhost:port // v4 or 6 loopback depending on /etc/hosts
- 0.0.0.0:port // any interface
- addr:port // an address assigned to one of the devices
+ [::1]:port v6 localhost device (loop back)
+ localhost:port v4 or 6 loopback depending on /etc/hosts
+ 0.0.0.0:port any interface
+ addr:port an address assigned to one of the devices