O_ACCEPT
case O_ACCEPT:
O_CHECK_STATE, O_ACCEPT, O_COUNT, O_DENY, O_REJECT,
action->opcode = O_ACCEPT;
O_ACCEPT, IPPROTO_TCP,
O_ACCEPT, IPPROTO_TCP,
case O_ACCEPT:
rule->cmd[0].opcode = default_to_accept ? O_ACCEPT : O_DENY;
case O_ACCEPT:
case O_ACCEPT: