netdev - [PATCH] selftests: net: fib-onlink-tests: Set high metric for default IPv6 route

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20251218-rbm-selftests-net-fib-onlink-v1-1-96302a5555c3@suse.com>
Date: Thu, 18 Dec 2025 09:20:38 -0300
From: Ricardo B. Marlière <rbm@...e.com>
To: "David S. Miller" <davem@...emloft.net>, 
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, 
 Paolo Abeni <pabeni@...hat.com>, Simon Horman <horms@...nel.org>, 
 Shuah Khan <shuah@...nel.org>, David Ahern <dsahern@...il.com>
Cc: netdev@...r.kernel.org, linux-kselftest@...r.kernel.org, 
 linux-kernel@...r.kernel.org, 
 Ricardo B. Marlière <rbm@...e.com>
Subject: [PATCH] selftests: net: fib-onlink-tests: Set high metric for
 default IPv6 route

Currently, the test breaks if the SUT already has a default route
configured for IPv6. Fix by adding "metric 9999" to the `ip -6 ro add`
command, so that multiple default routes can coexist.

Fixes: 4ed591c8ab44 ("net/ipv6: Allow onlink routes to have a device mismatch if it is the default route")
Signed-off-by: Ricardo B. Marlière <rbm@...e.com>
---
 tools/testing/selftests/net/fib-onlink-tests.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/net/fib-onlink-tests.sh b/tools/testing/selftests/net/fib-onlink-tests.sh
index ec2d6ceb1f08..acf6b0617373 100755
--- a/tools/testing/selftests/net/fib-onlink-tests.sh
+++ b/tools/testing/selftests/net/fib-onlink-tests.sh
@@ -207,7 +207,7 @@ setup()
 		ip -netns ${PEER_NS} addr add ${V6ADDRS[p${n}]}/64 dev ${NETIFS[p${n}]} nodad
 	done

-	ip -6 ro add default via ${V6ADDRS[p3]/::[0-9]/::64}
+	ip -6 ro add default via ${V6ADDRS[p3]/::[0-9]/::64} metric 9999
 	ip -6 ro add table ${VRF_TABLE} default via ${V6ADDRS[p7]/::[0-9]/::64}

 	set +e

---
base-commit: 8f0b4cce4481fb22653697cced8d0d04027cb1e8
change-id: 20251218-rbm-selftests-net-fib-onlink-873ad01e6884

Best regards,
-- 
Ricardo B. Marlière <rbm@...e.com>