[Devel] [PATCH RHEL10 COMMIT] ms/selftests: Disable dad for ipv6 in fcnal-test.sh

[Konstantin Khorenko]

The commit is pushed to "branch-rh10-6.12.0-55.13.1.3.x.vz10-ovz" and will appear at git at bitbucket.org:openvz/vzkernel.git
after rh10-6.12.0-55.13.1.3.26.vz10
------>
commit 246a03ee12c43766fff35f6fec7c3bd99fca93fe
Author: David Ahern <dsahern at kernel.org>
Date:   Tue Dec 16 21:04:16 2025 +0000

    ms/selftests: Disable dad for ipv6 in fcnal-test.sh
    
    Constrained test environment; duplicate address detection is not needed
    and causes races so disable it.
    
    Signed-off-by: David Ahern <dsahern at kernel.org>
    Reviewed-by: Simon Horman <horms at kernel.org>
    Link: https://patch.msgid.link/20250910025828.38900-1-dsahern@kernel.org
    Signed-off-by: Jakub Kicinski <kuba at kernel.org>
    
    https://virtuozzo.atlassian.net/browse/VSTOR-120995
    (cherry picked from commit 53d591730ea34f97a82f7ec6e7c987ca6e34dc21)
    Signed-off-by: Aleksei Oladko <aleksey.oladko at virtuozzo.com>
    
    Feature: fix ms/selftests
---
 tools/testing/selftests/net/fcnal-test.sh | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/testing/selftests/net/fcnal-test.sh b/tools/testing/selftests/net/fcnal-test.sh
index 46324e73f5035..a7edf43245c2a 100755
--- a/tools/testing/selftests/net/fcnal-test.sh
+++ b/tools/testing/selftests/net/fcnal-test.sh
@@ -424,6 +424,8 @@ create_ns()
 	ip netns exec ${ns} sysctl -qw net.ipv6.conf.all.keep_addr_on_down=1
 	ip netns exec ${ns} sysctl -qw net.ipv6.conf.all.forwarding=1
 	ip netns exec ${ns} sysctl -qw net.ipv6.conf.default.forwarding=1
+	ip netns exec ${ns} sysctl -qw net.ipv6.conf.default.accept_dad=0
+	ip netns exec ${ns} sysctl -qw net.ipv6.conf.all.accept_dad=0
 }
 
 # create veth pair to connect namespaces and apply addresses.