address (string list): optional, DNS name(s) used to find our peer;
address literals are supported too if enclosed in `[' `]'.
port (integer): mandatory if 'address' is specified: the port used
to contact our peer
peer-keys (string): path (prefix) for peer public key set file(s);
address (string list): optional, DNS name(s) used to find our peer;
address literals are supported too if enclosed in `[' `]'.
port (integer): mandatory if 'address' is specified: the port used
to contact our peer
peer-keys (string): path (prefix) for peer public key set file(s);