252 	strncat(features, ", ",   in get_optional_features()
255     strncat(features, "CPU affinity setting",   in get_optional_features()
262 	strncat(features, ", ",   in get_optional_features()
265     strncat(features, "IPv6 flow label",   in get_optional_features()
272 	strncat(features, ", ",   in get_optional_features()
275     strncat(features, "SCTP",   in get_optional_features()
282 	strncat(features, ", ",   in get_optional_features()
285     strncat(features, "TCP congestion algorithm setting",   in get_optional_features()
292 	strncat(features, ", ",  in get_optional_features()
295     strncat(features, "sendfile / zerocopy",  in get_optional_features()
302 	strncat(features, ", ",  in get_optional_features()
305     strncat(features, "socket pacing",  in get_optional_features()
312 	strncat(features, ", ",  in get_optional_features()
315     strncat(features, "authentication",  in get_optional_features()
321 	strncat(features, "None",   in get_optional_features()