DC_SP_MAC
sp[39] = DC_SP_MAC(eaddr[0]);
sp[40] = DC_SP_MAC(eaddr[1]);
sp[41] = DC_SP_MAC(eaddr[2]);
*(*sp)++ = DC_SP_MAC(ma[1] << 8 | ma[0]);
*(*sp)++ = DC_SP_MAC(ma[3] << 8 | ma[2]);
*(*sp)++ = DC_SP_MAC(ma[5] << 8 | ma[4]);
*sp++ = DC_SP_MAC(eaddr[1] << 8 | eaddr[0]);
*sp++ = DC_SP_MAC(eaddr[3] << 8 | eaddr[2]);
*sp++ = DC_SP_MAC(eaddr[5] << 8 | eaddr[4]);
*sp++ = DC_SP_MAC(0xFFFF);
*sp++ = DC_SP_MAC(0xFFFF);
*sp++ = DC_SP_MAC(0xFFFF);
*sp++ = DC_SP_MAC(0xFFFF);
*sp++ = DC_SP_MAC(0xFFFF);
*sp++ = DC_SP_MAC(0xFFFF);
sp[0] = DC_SP_MAC(eaddr[0]);
sp[1] = DC_SP_MAC(eaddr[1]);
sp[2] = DC_SP_MAC(eaddr[2]);