Ummm, that's from a carbureted bike, and his is FI.
Now back to the original question...
If you check your repair manual, there are pictures of the hose routings. You should have 2 hoses connected to the bottom of your tank (except for the fuel hoses). One is a tank vent (1/8" ID, IIRC), while the other is about 1/4" ID and is the fuel filler overflow.
The overflow runs down inbetween the engine & swingarm, while the tank vent connects to the hoses you are describing. A picture says 1000 words, so take a look in the manual as to how they are supposed to be connected.