add a check before adding an interface as a slave

bonding.patch (text/x-patch), 704 bytes, created by Kfir Lavi on 2011-05-09 22:00:08 UTC

--- /lib/rc/net/bonding.sh.orig	2011-05-10 00:51:07.429000088 +0300
+++ /lib/rc/net/bonding.sh	2011-05-10 00:51:11.110000089 +0300
@@ -97,12 +97,14 @@
 	# finally add in slaves
 	eoutdent
 	if [ -d /sys/class/net ]; then
+		sys_bonding_path=/sys/class/net/"${IFACE}"/bonding
 		if [ -n "${primary}" ]; then
-			echo "${primary}" >/sys/class/net/"${IFACE}"/bonding/primary
+			echo "${primary}" >$sys_bonding_path/primary
 			slaves="${slaves/${primary}/}"
 		fi
 		for s in ${slaves}; do
-			echo "+${s}" >/sys/class/net/"${IFACE}"/bonding/slaves
+			grep -q ${s} $sys_bonding_path/slaves \
+				|| echo "+${s}" >$sys_bonding_path/slaves
 		done
 	else
 		/sbin/ifenslave "${IFACE}" ${slaves} >/dev/null