diff --git a/repos/libports/run/nic_router.run b/repos/libports/run/nic_router.run
index 2e1b1eaa8a..5218eb7e42 100644
--- a/repos/libports/run/nic_router.run
+++ b/repos/libports/run/nic_router.run
@@ -11,7 +11,8 @@ proc test_timeout { } {
 }
 
 proc enable_test_1 { } { return 1 }
-proc enable_test_2 { } { return 1 }
+# disabled until #3992 is fixed
+proc enable_test_2 { } { return 0 }
 proc enable_test_3 { } { return 1 }
 proc enable_test_4 { } { return 1 }
 proc enable_test_5 { } { return 1 }