add_nested_action_start
start = add_nested_action_start(sfa, OVS_ACTION_ATTR_SAMPLE, log);
start = add_nested_action_start(sfa, OVS_ACTION_ATTR_DEC_TTL, log);
action_start = add_nested_action_start(sfa, OVS_DEC_TTL_ATTR_ACTION, log);
start = add_nested_action_start(sfa, OVS_ACTION_ATTR_CLONE, log);
start = add_nested_action_start(sfa, OVS_ACTION_ATTR_SET, log);
start = add_nested_action_start(sfa,
start = add_nested_action_start(sfa, OVS_ACTION_ATTR_CHECK_PKT_LEN,
nested_acts_start = add_nested_action_start(sfa,
nested_acts_start = add_nested_action_start(sfa,