changed ifup() to skip interfaces that are already up

1 files changed, 2 insertions, 0 deletions

diff --git a/network b/network
index b16c9f1..2510b58 100755
--- a/network
+++ b/network
@@ -31,6 +31,8 @@ ifup()
 		echo "usage: $0 ifup <interface_name>"
 		return 1
 	fi
+	# don't bring up an interface that's already up
+	[ "`/sbin/ifconfig ${1} 2>/dev/null | grep UP`" ] && return 1
 	eval iwcfg="\$wlan_${1}"
 	if [ "$iwcfg" != "" ]; then
 		/usr/sbin/iwconfig $iwcfg