queries=805155 ok_pts=0 enoent=397088 other=408067 weird=[ptm/0][ptm/0][ptm/0]
(note: DF ptmx masters are named ptm/N, not pts/N; all "other" results were valid ptm/N names - no stale/garbage returns; guest stayed up)

env: DragonFly 6.5-DEVELOPMENT INVARIANTS kernel, QEMU/KVM 6 vCPU, 4GB RAM