- # A space separated list of IP:PORT is accepted. The first available will
- # get the metrics.
- # IPv6 addresses should be [IP]:PORT
+ # A space separated list of [PROTOCOL:]HOST[%INTERFACE][:PORT] is accepted.
+ # The first available will get the metrics.
+ # PROTOCOL = tcp or udp (only tcp is supported by masters)
+ # HOST = an IPv4, IPv6 IP, or a hostname.
+ # IPv6 IPs should be given with brackets [ip:address]
+ # INTERFACE = the network interface to use
+ # PORT = the port number or service name (/etc/services)
+ # This communication is not HTTP (cannot be proxied).