unb2 has 2 eth channels and testio is 6 (before in unb1 8)

.../uniboard2/designs/unb2_minimal/src/vhdl/unb2_minimal.vhd

...iboard2/libraries/unb2_board/src/vhdl/ctrl_unb2_board.vhd

...niboard2/libraries/unb2_board/src/vhdl/unb2_board_pkg.vhd