test: rtnetlink: try double sleep to give WQ a chance

Signed-off-by: Jakub Kicinski <[email protected]>
Signed-off-by: NipaLocal <nipa@local>

Author: kuba-moo

tools/testing/selftests/net/rtnetlink.sh

@@ -299,6 +299,11 @@ kci_test_addrlft()
 	done
 
 	sleep 5
+	# Schedule out for a bit, address GC runs from the power efficient WQ
+	# if the long sleep above has put the whole system into sleep state
+	# the WQ may have not had a chance to run.
+	sleep 1.2
+
 	ip addr show dev "$devdummy" > /tmp/a
 	run_cmd_grep_fail "10.23.11." cat /tmp/a
 	if [ $? -eq 0 ]; then