Jakub reported increased flakiness in bond_macvlan_ipvlan.sh on regular kernel, while the tests consistently pass on a debug kernel. This suggests a timing-sensitive issue. To mitigate this, introduce a short sleep before each xvlan_over_bond connectivity check. The delay helps ensure neighbor and route cache have fully converged before verifying connectivity. The sleep interval is kept minimal since check_connection() is invoked nearly 100 times during the test. Fixes: 246af950b940 ("selftests: bonding: add macvlan over bond testing") Reported-by: Jakub Kicinski <kuba@kernel.org> Closes: https://lore.kernel.org/netdev/20251114082014.750edfad@kernel.org Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Link: https://patch.msgid.link/20251127143310.47740-1-liuhangbin@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>