_NETFLOW_V9_MAX_SIZE
if (m_pktlen(m) + sizeof(struct netflow_v9_record_general) + sizeof(struct netflow_v9_flowset_header) >= _NETFLOW_V9_MAX_SIZE(t->mtu))
#define NETFLOW_V9_MAX_SIZE _NETFLOW_V9_MAX_SIZE(BASE_MTU)