How to set IP segment and connection string with IPv6?

For this PostgreSQL configuration example: https://repmgr.org/docs/4.4/quickstart-authentication.html

local   replication   repmgr                              trust
    host    replication   repmgr      127.0.0.1/32            trust
    host    replication   repmgr      192.168.1.0/24          trust

    local   repmgr        repmgr                              trust
    host    repmgr        repmgr      127.0.0.1/32            trust
    host    repmgr        repmgr      192.168.1.0/24          trust

I have two questions. # Question 1 This is how a netmask looks for IPv4: 192.168.1.0/24. How to do with an IPv6 IP address like 230b:c010:103:5858:a6a3:3:0:1? # Question 2 If use JDBC to connect to a PostgreSQL server, I can use a connection URL containing 192.168.1.11:5432. How to do it with IPv6? Is it like 230b:c010:103:5858:a6a3:3:0:1:5432?