Did a video inspection of the 2” kitchen sink drain line from under kitchen sink found hole at bottom of 2” drain near tee connection, bottom of pipe completely missing line was holding water but ran clear water to get good view of missing pipe. Too many connections and turns in 2” run to line needs to be broke up and replaced. 4” line appears to be in good condition. Recommended replacing all 2” pipe underground while hole is open and cabinets are removed to prevent having to remove and open floor again in future.