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-rwxr-xr-xtools/testing/selftests/net/fib_nexthops.sh8
1 files changed, 8 insertions, 0 deletions
diff --git a/tools/testing/selftests/net/fib_nexthops.sh b/tools/testing/selftests/net/fib_nexthops.sh
index 4c7d33618437..d98fb85e201c 100755
--- a/tools/testing/selftests/net/fib_nexthops.sh
+++ b/tools/testing/selftests/net/fib_nexthops.sh
@@ -1524,6 +1524,14 @@ basic()
run_cmd "$IP nexthop replace id 2 blackhole dev veth1"
log_test $? 2 "Blackhole nexthop with other attributes"
+ # blackhole nexthop should not be affected by the state of the loopback
+ # device
+ run_cmd "$IP link set dev lo down"
+ check_nexthop "id 2" "id 2 blackhole"
+ log_test $? 0 "Blackhole nexthop with loopback device down"
+
+ run_cmd "$IP link set dev lo up"
+
#
# groups
#