diff -ur --minimal ircd-hybrid-5.3p8/include/config.h ircd-hybrid-5.3p8+ins/include/config.h
--- ircd-hybrid-5.3p8/include/config.h	Sat Jul 29 17:02:36 2000
+++ ircd-hybrid-5.3p8+ins/include/config.h	Wed Feb  7 04:04:00 2001
@@ -694,6 +694,18 @@
 
 #define NO_PRIORITY
 
+/* SPOOF - hostname spoofing
+ *
+ * If this is defined, clients connecting who match a spoofed I line will have
+ * their hostname changed to SPOOFHOST.
+ * I lines should be added like this:
+ *
+ * I:NOMATCH::=user@host::1
+ */
+
+#define SPOOF
+#define SPOOFHOST "oper.irc.ins.net.uk"
+
 /*   STOP STOP STOP STOP STOP STOP STOP STOP STOP STOP STOP STOP STOP STOP  */
 
 /* You shouldn't change anything below this line, unless absolutely needed. */
diff -ur --minimal ircd-hybrid-5.3p8/include/patchlevel.h ircd-hybrid-5.3p8+ins/include/patchlevel.h
--- ircd-hybrid-5.3p8/include/patchlevel.h	Sat Aug  7 06:49:02 1999
+++ ircd-hybrid-5.3p8+ins/include/patchlevel.h	Wed Feb  7 04:03:07 2001
@@ -17,5 +17,5 @@
  */
 
 #ifndef	PATCHLEVEL
-#define PATCHLEVEL    "2.8/hybrid-5.3p8"
+#define PATCHLEVEL    "2.8/hybrid-5.3p8/ins"
 #endif
diff -ur --minimal ircd-hybrid-5.3p8/include/struct.h ircd-hybrid-5.3p8+ins/include/struct.h
--- ircd-hybrid-5.3p8/include/struct.h	Sat Jul 29 17:02:36 2000
+++ ircd-hybrid-5.3p8+ins/include/struct.h	Wed Feb  7 04:04:36 2001
@@ -343,6 +343,9 @@
   char	*passwd;
   char	*name;
   int	port;
+#ifdef SPOOF
+  int   spoof; /* spoofed ip */
+#endif
   time_t hold;		/* Hold action until this time (calendar time) */
   aClass *class;	  /* Class of connection */
   struct ConfItem *next;
diff -ur --minimal ircd-hybrid-5.3p8/src/s_conf.c ircd-hybrid-5.3p8+ins/src/s_conf.c
--- ircd-hybrid-5.3p8/src/s_conf.c	Thu Jul 20 02:09:27 2000
+++ ircd-hybrid-5.3p8+ins/src/s_conf.c	Wed Feb  7 04:07:44 2001
@@ -220,6 +220,15 @@
   /* only check it if its non zero */
   if ((aconf->class->conFreq) && (ip_found->count > aconf->class->conFreq))
      return -4; /* Already at maximum allowed ip#'s */
+#ifdef SPOOF
+  if (aconf->spoof) {
+     char *p = cptr->sockhost, *q = aconf->name;
+     while(*q != '@' && *q)
+      q++;
+     strcpy(p, SPOOFHOST);
+  }
+#endif
+
 
   return ( attach_conf(cptr, aconf) );
 }
@@ -1296,7 +1305,17 @@
 	  DupString(aconf->passwd, tmp);
 	  if ((tmp = getfield(NULL)) == NULL)
 	    break;
-	  DupString(aconf->name, tmp);
+        switch(tmp[0]) {
+#ifdef SPOOF
+        case '=': /* spoof this host */
+              aconf->spoof=1;
+              DupString(aconf->name, tmp+1);
+              break;
+#endif
+        default:
+              DupString(aconf->name, tmp);
+              break;
+        }
 	  if ((tmp = getfield(NULL)) == NULL)
 	    break;
 	  aconf->port = atoi(tmp);
diff -ur --minimal ircd-hybrid-5.3p8/src/s_serv.c ircd-hybrid-5.3p8+ins/src/s_serv.c
--- ircd-hybrid-5.3p8/src/s_serv.c	Thu Jul 20 02:09:27 2000
+++ ircd-hybrid-5.3p8+ins/src/s_serv.c	Wed Feb  7 04:09:55 2001
@@ -1644,7 +1644,14 @@
 	c = (char)*(p+2);
 	host = BadPtr(tmp->host) ? null : tmp->host;
 	pass = BadPtr(tmp->passwd) ? null : tmp->passwd;
-	name = BadPtr(tmp->name) ? null : tmp->name;
+#ifdef SPOOF
+      if (tmp->spoof && !IsOper(sptr)) {
+              name = "[HIDDEN]";
+      } else {
+              name = BadPtr(tmp->name) ? null : tmp->name;
+      }
+#endif
+
 	port = (int)tmp->port;
 
 	/*