NGE_JUMBO_FRAMELEN
m_new->m_ext.ext_size = NGE_JUMBO_FRAMELEN;
#define NGE_JUMBO_MTU (NGE_JUMBO_FRAMELEN-ETHER_HDR_LEN-ETHER_CRC_LEN)
#define NGE_JRAWLEN (NGE_JUMBO_FRAMELEN + ETHER_ALIGN)