HelenOS sources

TCP_ENOTEXIST     135 uspace/srv/net/tcp/ucall.c 		return TCP_ENOTEXIST;
TCP_ENOTEXIST     191 uspace/srv/net/tcp/ucall.c 		return TCP_ENOTEXIST;
TCP_ENOTEXIST     254 uspace/srv/net/tcp/ucall.c 		return TCP_ENOTEXIST;