diff --git a/boards/uniboard2/designs/unb2_test/tb/python/tc_unb2_test.py b/boards/uniboard2/designs/unb2_test/tb/python/tc_unb2_test.py
index f5e4c1453cdd33fac2b945964b052ef228b08346..89b0d06c13259cf00b4e0b5c2796cccc5bcc0df2 100644
--- a/boards/uniboard2/designs/unb2_test/tb/python/tc_unb2_test.py
+++ b/boards/uniboard2/designs/unb2_test/tb/python/tc_unb2_test.py
@@ -91,12 +91,15 @@ def test_BG_to_DB(tc,io,cmd):
     tc.append_log(1, '>>> %s' % help_text(tc,io,cmd))
     tc.append_log(3, '>>>')
 
-
-
     if use_pps==True: ppsh = pi_ppsh.PiPpsh(tc, io)
 
     tc.set_section_id('Read - ')
     instanceName=tc.gpString
+
+    if instanceName == '1GBE':
+        eth = pi_eth.PiEth(tc, io)
+        eth.write_udp_port_en(0) 
+
     nof_streams=24+24
     blocksize=0
     Bg = pi_diag_block_gen.PiDiagBlockGen(tc,io,nofChannels=nof_streams,ramSizePerChannel=blocksize,instanceName=instanceName)