from trex_stl_lib.api import * # stream will be sent with src MAC addrees dst="60:60:60:60:60:60" and not from default of trex_cfg.yaml port src mac class STLS1(object): def create_stream (self): return STLStream( packet = STLPktBuilder(pkt = Ether(dst="60:60:60:60:60:60")/IP(src="16.0.0.1",dst="48.0.0.1")/UDP(dport=12,sport=1025)/(10*'x')), mode = STLTXCont(), #mac_dst_override_mode=STLStreamDstMAC_PKT # another way to explictly take it ) def get_streams (self, direction = 0, **kwargs): # create 1 stream return [ self.create_stream() ] # dynamic load - used for trex console or simulator def register(): return STLS1()