install sample commented /etc/ifaliases file; which can now contain #

comments and blank lines. new format is "interface address netmask"
(yes, i changed the order of the entries). inspired by netbsd pr#2474;
gillhaa@ghost.whirlpool.com

src/etc/Makefile

@@ -1,4 +1,4 @@
-#	$OpenBSD: Makefile,v 1.14 1996/06/03 07:20:41 mickey Exp $
+#	$OpenBSD: Makefile,v 1.15 1996/06/16 12:57:30 deraadt Exp $
 
 TZDIR=		/usr/share/zoneinfo
 LOCALTIME=	US/Pacific
@@ -15,9 +15,10 @@ BINOWN= root
 BINGRP= wheel
 BIN1=	aliases bootptab changelist csh.cshrc csh.login csh.logout daily \
 	dm.conf ftpusers ftpchroot gettytab group hosts hosts.equiv hosts.lpd \
-	inetd.conf man.conf monthly motd myname netstart newsyslog.conf \
-	phones printcap protocols rc rc.local remote rpc security services \
-	shells syslog.conf weekly etc.${MACHINE}/ttys etc.${MACHINE}/disktab
+	ifaliases inetd.conf man.conf monthly motd myname netstart \
+	newsyslog.conf phones printcap protocols rc rc.local remote rpc \
+	security services shells syslog.conf weekly etc.${MACHINE}/ttys \
+	etc.${MACHINE}/disktab
 
 # -rw-rw-r--
 BIN2=	motd

src/etc/ifaliases

@@ -0,0 +1,5 @@
+# $OpenBSD: ifaliases,v 1.1 1996/06/16 12:57:30 deraadt Exp $
+# This file contains a list of IP addresses aliases in the form
+# 	interface address netmask
+# ie:
+# 	ep0 124.125.126.129 255.255.255.0

src/etc/netstart

@@ -1,6 +1,6 @@
 #!/bin/sh -
 #
-#	$OpenBSD: netstart,v 1.6 1996/06/02 21:17:58 tholo Exp $
+#	$OpenBSD: netstart,v 1.7 1996/06/16 12:57:31 deraadt Exp $
 
 # set these to "NO" to turn them off.  otherwise, they're used as flags
 routed_flags=-q
@@ -120,15 +120,16 @@ fi
 # /etc/ifaliases, if it exists, contains the names of additional IP
 # addresses for each interface. It is formatted as a series of lines
 # that contain
-# address interface
+#	interface address netmask
 if [ -f /etc/ifaliases ]; then
 (
-	set -- `cat /etc/ifaliases`
+	# delete comments and blank lines
+	set -- `sed -e 's/#.*$//' /etc/ifaliases | grep -v '^$'`
 
-	while [ $# -ge 2 ] ; do
-		ifconfig $2 inet alias $1
-		route add $1 localhost
-		shift 2
+	while [ $# -ge 3 ] ; do
+		ifconfig $1 inet alias $2 netmask $3
+		route add $2 localhost
+		shift 3
 	done
 )
 fi