e65f4a5f_My_Little_SMF_FAQ__meaning
[property] proto [meaning] 
In the case of socket-based services, this is a list of protocols supported by the service. Valid protocols are: tcp, tcp6, tcp6only, udp, udp6, and udp6only. In the case of TLI services, this is a list of netids recognized by getnetconfigent(3NSL) supported by the service, plus the values tcp6only and udp6only. RPC/TLI services also support nettypes in this list, and inetd first tries to interpret the list member as a nettype for these service types. The values tcp6only and udp6only are new to inetd; these values request that inetd listen only for and pass on true IPv6 requests (not IPv4 mapped ones).
My_Little_SMF_FAQ
meaning