A couple of changes of mine that I've been using for a while:

route.c: look up the netname as-is first before the shifted name. this
         makes a big speed difference, as the lookups are generally local
	 DNS.  The shifted names can be very wrong (there is still guessing
	 and fudging involved) and usually go remote, taking a long time
	 to fail.  If you have the RFC reccomended netnames in your reverse
	 lookups, this is even faster still.
main.c:  dont do a sethostent(1) - this is causing the resolver to use a
	 VC (tcp) connection to the resolver, which has more overheads and
	 is slower than the default UDP case.  This once made sense when
	 everything was based on text host tables.

2 files changed, 11 insertions, 3 deletions

diff --git a/usr.bin/netstat/main.c b/usr.bin/netstat/main.c
index ed02642..d51489a 100644
--- a/usr.bin/netstat/main.c
+++ b/usr.bin/netstat/main.c
@@ -364,12 +364,20 @@ main(argc, argv)
 			printf("%s: no stats routine\n", tp->pr_name);
 		exit(0);
 	}
+#if 0
 	/*
 	 * Keep file descriptors open to avoid overhead
 	 * of open/close on each call to get* routines.
 	 */
 	sethostent(1);
 	setnetent(1);
+#else
+	/*
+	 * This does not make sense any more with DNS being default over
+	 * the files.  Doing a setXXXXent(1) causes a tcp connection to be
+	 * used for the queries, which is slower.
+	 */
+#endif
 	if (iflag) {
 		intpr(interval, nl[N_IFNET].n_value);
 		exit(0);
diff --git a/usr.bin/netstat/route.c b/usr.bin/netstat/route.c
index 82b4eff..0f9d1a5 100644
--- a/usr.bin/netstat/route.c
+++ b/usr.bin/netstat/route.c
@@ -36,7 +36,7 @@
 static char sccsid[] = "From: @(#)route.c	8.6 (Berkeley) 4/28/95";
 #endif
 static const char rcsid[] =
-	"$Id: route.c,v 1.8 1995/12/05 07:29:15 julian Exp $";
+	"$Id: route.c,v 1.9 1996/01/14 23:33:13 peter Exp $";
 #endif /* not lint */
 
 #include <sys/param.h>
@@ -662,8 +662,8 @@ netname(in, mask)
 		net = i & mask;
 		while ((mask & 1) == 0)
 			mask >>= 1, net >>= 1;
-		if (!(np = getnetbyaddr(net, AF_INET)))
-			np = getnetbyaddr(i, AF_INET);
+		if (!(np = getnetbyaddr(i, AF_INET)))
+			np = getnetbyaddr(net, AF_INET);
 		if (np)
 			cp = np->n_name;
 	}