Fix ifconfig.sh script

Add missing test for the variable 'a' being empty on linux.

diff --git a/bin/tests/system/ifconfig.sh.in b/bin/tests/system/ifconfig.sh.in
index a729055e22a788d648c762b423573f7053ab3dc1..126777c658005e3b648e37ede2f138d1955ef85b 100755 (executable)
--- a/bin/tests/system/ifconfig.sh.in
+++ b/bin/tests/system/ifconfig.sh.in
@@ -66,7 +66,7 @@ up() {
         [ "$aaaa" ] && ip address add $aaaa/64 dev lo
         ip link set dev lo:$int mtu 1500
       else
-        ifconfig lo:$int $a up netmask 255.255.255.0 mtu 1500
+        [ "$a" ] && ifconfig lo:$int $a up netmask 255.255.255.0 mtu 1500
         [ "$aaaa" ] && ifconfig lo inet6 add $aaaa/64
       fi
       ;;