# probe_oob_unit (root, 1000 ptys held):
holding 1000 ptys
open #1001 (OOB unit): FAILED Operation not supported by device(19)
/dev/pts/1000 exists: 20600 0:0
/dev/ptm/1000 stat: No such file or directory
open #1002: refused Operation not supported by device(19)
open /dev/pts/1000: SUCCEEDED fd=1003        <-- OOB pty is a functional slave
open /dev/ptm/1000: No such file or directory(2)
sleeping 5 with everything held...
rc=0