Function otIp6ProtoToString 

pub unsafe extern "C" fn otIp6ProtoToString(
    aIpProto: u8,
) -> *const c_char

Converts a given IP protocol number to a human-readable string.

@param[in] aIpProto An IP protocol number (OT_IP6_PROTO_* enumeration).

@returns A string representing @p aIpProto.