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--- a/test/behaviour_test.sh
+++ b/test/behaviour_test.sh
@@ -13,17 +13,8 @@ function get_dev {
# select a suitable device for testing purposes
# * a device that is an "ether"
# * and isn't a nil hardware address
-
- # https://www.kernel.org/doc/Documentation/ABI/testing/sysfs-class-net
- ARPHRD_ETHER=1
-
- for dev in /sys/class/net/* ; do
- test ! -e "$dev/address" && continue
- test "`cat $dev/address`" = "00:00:00:00:00:00" && continue
- test "`cat $dev/type`" != "$ARPHRD_ETHER" && continue
- basename "$dev"
- break
- done
+ # strip suffix from name (veth3@if8 -> veth3)
+ ip -oneline link show | grep link/ether | grep state.UP | grep -v 00:00:00:00:00:00 | cut -d ":" -f2 | cut -d "@" -f 1 | head -n1
}
dev="`get_dev`"
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