BGE_JUMBO_FRAMELEN
m_new->m_ext.ext_size = BGE_JUMBO_FRAMELEN;
txmaxsz = BGE_JUMBO_FRAMELEN;
#define BGE_JRAWLEN (BGE_JUMBO_FRAMELEN + ETHER_ALIGN)
#define BGE_JUMBO_MTU (BGE_JUMBO_FRAMELEN-ETHER_HDR_LEN-ETHER_CRC_LEN)