== PRISTINE production ppbconf.c, fresh-boot decisive run (run4) ==
PPBX2: DF-5512 ppbus_setup_intr re-registration test
PPBX2: DF-5512 setup#1 err=0 ck1=0x1000 ivars.cookie=0x1000
PPBX2: DF-5512 setup#2 err=0 ck2=0x1001 ivars.cookie=0x1001 (lpt.c write-error-path re-register)
PPBX2: DF-5512 after ppb_release_bus: parent setups=2 teardowns=1 still-live=1; ppbus ivars cookie=0 resource=0
PPBX2: DF-5512 REPRODUCED: live==1 handlers remain registered while ppbus bookkeeping says none (cookie NULL)

== variance across the other pristine runs ==
DF-5510 Ta: PRINTER(0) wrong 4/4; Tb: MODEM(1) from OOB bytes 4/4; Tc control UNKNOWN 4/4
DF-5511 wrong-captures per 50M iters: 2,1,1,6
DF-5512/DF-5513 reproduced 4/4