--- Net2/netinet/in_proto.c	2018/04/24 18:03:54	1.1.1.1
+++ Net2/netinet/in_proto.c	2018/04/24 18:04:09	1.1.1.2
@@ -156,22 +156,3 @@ struct domain impdomain =
       impsw, &impsw[sizeof (impsw)/sizeof(impsw[0])] };
 #endif
 
-#include "hy.h"
-#if NHY > 0
-/*
- * HYPERchannel protocol family: raw interface.
- */
-int	rhy_output();
-extern	struct domain hydomain;
-
-struct protosw hysw[] = {
-{ SOCK_RAW,	&hydomain,	0,		PR_ATOMIC|PR_ADDR,
-  0,		rhy_output,	0,		0,
-  rip_usrreq,
-  0,		0,		0,		0,
-},
-};
-
-struct domain hydomain =
-    { AF_HYLINK, "hy", 0, 0, 0, hysw, &hysw[sizeof (hysw)/sizeof(hysw[0])] };
-#endif