sctp: do not inherit ipv6_{mc|ac|fl}_list from parent

SCTP needs fixes similar to 83eaddab4378 ("ipv6/dccp: do not inherit
ipv6_mc_list from parent"), otherwise bad things can happen.

Change-Id: Ia0887948642ee3dc24453a405481a32db0c75285
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Tested-by: Andrey Konovalov <andreyknvl@google.com>
Tracked-On: https://jira01.devtools.intel.com/browse/AW-7175


Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Loic Akue <loicx.akue@intel.com>
Reviewed-on: https://android.intel.com/600485


Reviewed-by: Dubray, SimonX <simonx.dubray@intel.com>
Reviewed-by: Tasayco Loarte, VictorX <victorx.tasayco.loarte@intel.com>