Sudden loss of trans fluid

Ok, I put the car on jack stands and added 2 quarts of Dexron. The trans did not leak as the car idled in Park. As soon as I put it in neutral the 2 quarts poured right out. The fluid is leaking out of the bottom of the bell housing where the torque convertor is...right out of the inspection cover.

Would this be a front seal or possible broke the convertor? Does the transmission have to be taken out? Thanks in advance for your comments.

John