From http://www.egghelp.org/files/patches/nohostwhowhom1.6.17.desc:

"With this patch, eggdrop won't send hosts upon joining the botnet or
 on a remote who."

Patch created by BarkerJr <http://barkerjr.net/irc/eggdrop/>

diff -ur eggdrop1.6.17/src/botcmd.c eggdrop1.6.17.new/src/botcmd.c
--- eggdrop1.6.17/src/botcmd.c	2004-09-06 15:35:37.000000000 -0400
+++ eggdrop1.6.17.new/src/botcmd.c	2004-09-06 15:44:57.000000000 -0400
@@ -357,8 +357,8 @@
   for (i = 0; i < dcc_total; i++)
     if (dcc[i].type->flags & DCT_REMOTEWHO)
       if (dcc[i].u.chat->channel == chan) {
-        k = sprintf(s, "  %c%-15s %s", (geticon(i) == '-' ? ' ' : geticon(i)),
-                    dcc[i].nick, dcc[i].host);
+        k = sprintf(s, "  %c%-15s hidden",
+                    (geticon(i) == '-' ? ' ' : geticon(i)), dcc[i].nick);
         if (now - dcc[i].timeval > 300) {
           unsigned long days, hrs, mins;
 
@@ -397,8 +397,8 @@
           ok = 1;
           botnet_send_priv(idx, botnetnick, nick, NULL, "%s:", BOT_OTHERPEOPLE);
         }
-        l = sprintf(s, "  %c%-15s %s", (geticon(i) == '-' ? ' ' : geticon(i)),
-                    dcc[i].nick, dcc[i].host);
+        l = sprintf(s, "  %c%-15s hidden",
+                    (geticon(i) == '-' ? ' ' : geticon(i)), dcc[i].nick);
         if (now - dcc[i].timeval > 300) {
           k = (now - dcc[i].timeval) / 60;
           if (k < 60)
diff -ur eggdrop1.6.17/src/botmsg.c eggdrop1.6.17.new/src/botmsg.c
--- eggdrop1.6.17/src/botmsg.c	2004-09-06 15:35:37.000000000 -0400
+++ eggdrop1.6.17.new/src/botmsg.c	2004-09-06 15:35:57.000000000 -0400
@@ -611,15 +611,15 @@
   int l;
 
   if (tands > 0) {
-    l = simple_sprintf(OBUF, "j %s %s %D %c%D %s\n",
+    l = simple_sprintf(OBUF, "j %s %s %D %c%D hidden\n",
                        botnetnick, dcc[useridx].nick,
                        dcc[useridx].u.chat->channel, geticon(useridx),
-                       dcc[useridx].sock, dcc[useridx].host);
+                       dcc[useridx].sock);
     send_tand_but(-1, OBUF, -l);
 #ifndef NO_OLD_BOTNET
-    tandout_but(-1, "join %s %s %d %c%d %s\n", botnetnick,
+    tandout_but(-1, "join %s %s %d %c%d hidden\n", botnetnick,
                 dcc[useridx].nick, dcc[useridx].u.chat->channel,
-                geticon(useridx), dcc[useridx].sock, dcc[useridx].host);
+                geticon(useridx), dcc[useridx].sock);
     tandout_but(-1, "chan %s %d %s %s %s.\n",
                 botnetnick, dcc[useridx].u.chat->channel,
                 dcc[useridx].nick, NET_JOINEDTHE,
diff -ur eggdrop1.6.17/src/botnet.c eggdrop1.6.17.new/src/botnet.c
--- eggdrop1.6.17/src/botnet.c	2004-09-06 15:35:37.000000000 -0400
+++ eggdrop1.6.17.new/src/botnet.c	2004-09-06 15:35:57.000000000 -0400
@@ -752,16 +752,16 @@
             (dcc[i].u.chat->channel < GLOBAL_CHANS)) {
 #ifndef NO_OLD_BOTNET
           if (b_numver(z) < NEAT_BOTNET)
-            l = simple_sprintf(x, "join %s %s %d %c%d %s\n",
+            l = simple_sprintf(x, "join %s %s %d %c%d hidden\n",
                                botnetnick, dcc[i].nick,
                                dcc[i].u.chat->channel, geticon(i),
-                               dcc[i].sock, dcc[i].host);
+                               dcc[i].sock);
           else
 #endif
-            l = simple_sprintf(x, "j !%s %s %D %c%D %s\n",
+            l = simple_sprintf(x, "j !%s %s %D %c%D hidden\n",
                                botnetnick, dcc[i].nick,
                                dcc[i].u.chat->channel, geticon(i),
-                               dcc[i].sock, dcc[i].host);
+                               dcc[i].sock);
           tputs(dcc[z].sock, x, l);
 #ifndef NO_OLD_BOTNET
           if (b_numver(z) < NEAT_BOTNET) {
diff -ur eggdrop1.6.17/src/patch.h eggdrop1.6.17.new/src/patch.h
--- eggdrop1.6.17/src/patch.h	2004-09-06 15:35:37.000000000 -0400
+++ eggdrop1.6.17.new/src/patch.h	2004-09-06 15:36:26.000000000 -0400
@@ -36,7 +36,7 @@
  *
  *
  */
-/* PATCH GOES HERE */
+patch("nohostwhowhom");
 /*
  *
  *