netdev - [PATCH net 1/3] selftests/net: l2_tos_ttl_inherit.sh: Set IPv6 addresses with "nodad".

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Date:   Sun, 8 Jan 2023 16:45:41 +0100
From:   Guillaume Nault <gnault@...hat.com>
To:     David Miller <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Eric Dumazet <edumazet@...gle.com>
Cc:     netdev@...r.kernel.org, Shuah Khan <shuah@...nel.org>,
        Matthias May <matthias.may@...termo.com>,
        linux-kselftest@...r.kernel.org,
        Mirsad Goran Todorovac <mirsad.todorovac@....unizg.hr>
Subject: [PATCH net 1/3] selftests/net: l2_tos_ttl_inherit.sh: Set IPv6
 addresses with "nodad".

The ping command can run before DAD completes. In that case, ping may
fail and break the selftest.

We don't need DAD here since we're working on isolated device pairs.

Fixes: b690842d12fd ("selftests/net: test l2 tunnel TOS/TTL inheriting")
Signed-off-by: Guillaume Nault <gnault@...hat.com>
---
 tools/testing/selftests/net/l2_tos_ttl_inherit.sh | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/tools/testing/selftests/net/l2_tos_ttl_inherit.sh b/tools/testing/selftests/net/l2_tos_ttl_inherit.sh
index dca1e6f777a8..e2574b08eabc 100755
--- a/tools/testing/selftests/net/l2_tos_ttl_inherit.sh
+++ b/tools/testing/selftests/net/l2_tos_ttl_inherit.sh
@@ -137,8 +137,8 @@ setup() {
 		if [ "$type" = "gre" ]; then
 			type="ip6gretap"
 		fi
-		ip addr add fdd1:ced0:5d88:3fce::1/64 dev veth0
-		$ns ip addr add fdd1:ced0:5d88:3fce::2/64 dev veth1
+		ip addr add fdd1:ced0:5d88:3fce::1/64 dev veth0 nodad
+		$ns ip addr add fdd1:ced0:5d88:3fce::2/64 dev veth1 nodad
 		ip link add name tep0 type $type $local_addr1 \
 		remote fdd1:ced0:5d88:3fce::2 tos $test_tos ttl $test_ttl \
 		$vxlan $geneve
@@ -170,8 +170,8 @@ setup() {
 		ip addr add 198.19.0.1/24 brd + dev ${parent}0
 		$ns ip addr add 198.19.0.2/24 brd + dev ${parent}1
 	elif [ "$inner" = "6" ]; then
-		ip addr add fdd4:96cf:4eae:443b::1/64 dev ${parent}0
-		$ns ip addr add fdd4:96cf:4eae:443b::2/64 dev ${parent}1
+		ip addr add fdd4:96cf:4eae:443b::1/64 dev ${parent}0 nodad
+		$ns ip addr add fdd4:96cf:4eae:443b::2/64 dev ${parent}1 nodad
 	fi
 }
 
-- 
2.30.2