diff --git a/applications/lofar2/libraries/sdp/src/vhdl/sdp_pkg.vhd b/applications/lofar2/libraries/sdp/src/vhdl/sdp_pkg.vhd
index a2a4f30672928b41533b1b1e4af1a017898f2dd9..1fd2d2c1e333e3104de5eef5c38b77fe25b05fc5 100644
--- a/applications/lofar2/libraries/sdp/src/vhdl/sdp_pkg.vhd
+++ b/applications/lofar2/libraries/sdp/src/vhdl/sdp_pkg.vhd
@@ -154,6 +154,9 @@ PACKAGE sdp_pkg is
   CONSTANT c_sdp_bst_udp_src_port_15_8  : STD_LOGIC_VECTOR(7 DOWNTO 0) := x"D1";  -- TBC
   CONSTANT c_sdp_xst_udp_src_port_15_8  : STD_LOGIC_VECTOR(7 DOWNTO 0) := x"D2";  -- TBC
 
+  CONSTANT c_sdp_cep_app_header_len  : NATURAL := 32;
+  CONSTANT c_sdp_stat_app_header_len : NATURAL := 32;
+
   CONSTANT c_sdp_stat_nof_hdr_fields : NATURAL := 1+3+12+4+20+1; -- 608b; 19 32b words
   CONSTANT c_sdp_stat_hdr_field_sel  : STD_LOGIC_VECTOR(c_sdp_stat_nof_hdr_fields-1 DOWNTO 0) := "1"&"101"&"111011111001"&"0101"&"0100"&"000000000"&"0000100"&"0";  -- 0=data path, 1=MM controlled TODO
 --CONSTANT c_sdp_stat_hdr_field_sel  : STD_LOGIC_VECTOR(c_sdp_stat_nof_hdr_fields-1 DOWNTO 0) := "0"&"100"&"000000010001"&"0100"&"0100"&"000000010"&"1000000"&"0";  -- 0=data path, 1=MM controlled TODO
diff --git a/applications/lofar2/libraries/sdp/src/vhdl/sdp_statistics_offload.vhd b/applications/lofar2/libraries/sdp/src/vhdl/sdp_statistics_offload.vhd
index 47f0880a767599036a076150ab5e0a1f5c59db4c..c92f39fbfe91ca8e0c3adcfd0c5a2a2234877571 100644
--- a/applications/lofar2/libraries/sdp/src/vhdl/sdp_statistics_offload.vhd
+++ b/applications/lofar2/libraries/sdp/src/vhdl/sdp_statistics_offload.vhd
@@ -101,10 +101,6 @@ ARCHITECTURE str OF sdp_statistics_offload IS
   CONSTANT c_nof_data                  : NATURAL := sel_a_b(g_statistics_type="BST",  c_sdp_N_pol_bf * c_sdp_S_sub_bf,
                                                     sel_a_b(g_statistics_type="XST",  c_sdp_S_pn * c_sdp_S_pn * c_nof_complex, 
                                                                                       c_sdp_N_sub));  -- SST
-  CONSTANT c_ip_total_length           : NATURAL := 60 + c_nof_data * c_longword_sz;
-
-  CONSTANT c_udp_total_length          : NATURAL := 40 + c_nof_data * c_longword_sz;
-
   CONSTANT c_block_size                : NATURAL := c_nof_data * c_step_size;
   
   CONSTANT c_nof_packets               : NATURAL := sel_a_b(g_statistics_type="BST", 1,
@@ -125,6 +121,10 @@ ARCHITECTURE str OF sdp_statistics_offload IS
   
   CONSTANT c_beamlet_id                : NATURAL := g_beamset_id * c_sdp_S_sub_bf;
 
+  CONSTANT c_app_total_length : NATURAL := c_sdp_stat_app_header_len + c_nof_data * c_longword_sz;
+  CONSTANT c_udp_total_length : NATURAL := c_app_total_length + c_network_udp_header_len;
+  CONSTANT c_ip_total_length  : NATURAL := c_app_total_length + c_network_udp_header_len + c_network_ip_header_len;
+
   TYPE t_reg IS RECORD
     block_count          : NATURAL;
     start_address        : NATURAL;
diff --git a/applications/lofar2/libraries/sdp/tb/vhdl/tb_sdp_statistics_offload.vhd b/applications/lofar2/libraries/sdp/tb/vhdl/tb_sdp_statistics_offload.vhd
index bf575888fe226e2f4ae520e59f55310b12f99fc8..db5a0922e739a0ff5d873df54fe946cb85492438 100644
--- a/applications/lofar2/libraries/sdp/tb/vhdl/tb_sdp_statistics_offload.vhd
+++ b/applications/lofar2/libraries/sdp/tb/vhdl/tb_sdp_statistics_offload.vhd
@@ -114,9 +114,9 @@ ARCHITECTURE tb OF tb_sdp_statistics_offload IS
 
   CONSTANT c_beamlet_id                : NATURAL := g_beamset_id * c_sdp_S_sub_bf;
   
-  CONSTANT c_ip_total_length           : NATURAL := 60 + c_nof_data * c_longword_sz;
-
-  CONSTANT c_udp_total_length          : NATURAL := 40 + c_nof_data * c_longword_sz;
+  CONSTANT c_app_total_length : NATURAL := c_sdp_stat_app_header_len + c_nof_data * c_longword_sz;
+  CONSTANT c_udp_total_length : NATURAL := c_app_total_length + c_network_udp_header_len;
+  CONSTANT c_ip_total_length  : NATURAL := c_app_total_length + c_network_udp_header_len + c_network_ip_header_len;
 
   CONSTANT c_nof_valid_per_block : NATURAL := c_nof_data * c_data_size;
   CONSTANT c_nof_sync            : NATURAL := 5;