diff --git a/nixos/tests/jool.nix b/nixos/tests/jool.nix
index 76076cba6a63..06e8547a1ce8 100644
--- a/nixos/tests/jool.nix
+++ b/nixos/tests/jool.nix
@@ -306,8 +306,8 @@ in
         client.succeed("curl --fail -s http://[64:ff9b::203.0.113.16] | grep -q IPv4!")
 
       with subtest("Router BIB entries are correctly populated"):
-        router.succeed("jool bib display | grep -q 'Dynamic TCP.*2001:db8::8'")
-        router.succeed("jool bib display | grep -q 'Static TCP.*2001:db8::9'")
+        router.succeed("jool bib display --numeric | grep -q 'Dynamic TCP.*2001:db8::8'")
+        router.succeed("jool bib display --numeric | grep -q 'Static TCP.*2001:db8::9'")
 
       with subtest("WAN server can reach the LAN server"):
         homeserver.wait_for_open_port(80)