Index: new/bin/vznetaddbr.in
===================================================================
--- new.orig/bin/vznetaddbr.in 2013-10-04 09:09:45.000000000 +0200
-+++ new/bin/vznetaddbr.in 2013-10-04 09:21:04.000000000 +0200
++++ new/bin/vznetaddbr.in 2013-10-04 09:28:08.000000000 +0200
@@ -29,8 +29,14 @@
[ -n "$bridge" ] ||
bridge=vmbr0
+ if [ ! -f "/sys/class/net/$bridge/mtu" ]; then
-+ echo >&2 "bridge $bridge does not exists."
++ echo >&2 "bridge '$bridge' does not exist."
+ exit 1
+ fi
+