  At discovery time, C/2017 K2 (PANSTARRS) was the second most distant inbound
active comet ever observed. It has been argued that this object is in the
process of crossing the inner Solar System for the first time, but other
authors have concluded that it is dynamically old. We have performed full
N-body simulations for 3 Myr into the past using the latest public orbit
determination for this object and most of them, 67%, are consistent with a
bound and dynamically old Oort cloud comet, but about 29% of the studied orbits
are compatible with an interstellar origin. Our independent calculations
strongly suggest that C/2017 K2 is not a dynamically new Oort cloud comet.
