ixll: Fix ping(8)s that require all options precede address

The default ping(8) shipped with alpine does not support `ping <addr>
-c1`, but happily executes `ping -c1 <addr>`. Therefore, make sure
that the address is always the last argument.

utils/libll.sh

@@ -9,7 +9,7 @@ llping()
 {
     local iface="$1"
     shift
-    ping -L ff02::1%$iface "$@"
+    ping -L "$@" ff02::1%$iface
 }