Clarify origin of 1GbE source MAC and IP address.

applications/lofar2/libraries/sdp/src/vhdl/sdp_pkg.vhd

@@ -209,9 +209,9 @@ PACKAGE sdp_pkg is
   CONSTANT c_sdp_stat_app_header_len    : NATURAL := 32;
 
   CONSTANT c_sdp_stat_eth_dst_mac       : STD_LOGIC_VECTOR(47 DOWNTO 0) := x"001B217176B9";  -- 001B217176B9 = DOP36-enp2s0
-  CONSTANT c_sdp_stat_eth_src_mac_47_16 : STD_LOGIC_VECTOR(31 DOWNTO 0) := x"00228608";  -- 00:22:86:08:pp:qq
+  CONSTANT c_sdp_stat_eth_src_mac_47_16 : STD_LOGIC_VECTOR(31 DOWNTO 0) := x"00228608";  -- 00:22:86:08:pp:qq = UNB_ETH_SRC_MAC_BASE in libraries/unb_osy/unbos_eth.h
   CONSTANT c_sdp_stat_ip_dst_addr       : STD_LOGIC_VECTOR(31 DOWNTO 0) := x"0A6300FE";  -- 0A6300FE = '10.99.0.254' = DOP36-enp2s0
-  CONSTANT c_sdp_stat_ip_src_addr_31_16 : STD_LOGIC_VECTOR(15 DOWNTO 0) := x"0A63";    -- 10.99.xx.yy
+  CONSTANT c_sdp_stat_ip_src_addr_31_16 : STD_LOGIC_VECTOR(15 DOWNTO 0) := x"0A63";    -- 10.99.xx.yy = g_base_ip in ctrl_unb2#_board.vhd used in libraries/unb_osy/unbos_eth.c
   CONSTANT c_sdp_stat_udp_dst_port      : STD_LOGIC_VECTOR(15 DOWNTO 0) := TO_UVEC(5001, 16);  -- 0x1389 = 5001
   CONSTANT c_sdp_sst_udp_src_port_15_8  : STD_LOGIC_VECTOR( 7 DOWNTO 0) := x"D0";  -- TBC, 7:0 = gn_id (= ID[7:0] = backplane[5:0] & node[1:0])
   CONSTANT c_sdp_bst_udp_src_port_15_8  : STD_LOGIC_VECTOR( 7 DOWNTO 0) := x"D1";  -- TBC