naive sender and sniff function

Test on sniffing a fixed port, and it worked. (install instruction and
snifflog are not important--just find some place to take note, write
someting.)
one-way controller

one-way controller, but which thing to forward?
dsml_controller, bug exist

nw_dst, nw_src match simply be ignored
fixed a heartbreaking bug...

typt ->type
add nodes and tested

add nodes and tested
Merge pull request #6 from BlackVegetable/dev

Dev