Guest: DragonFly dfbsd 6.5-DEVELOPMENT #0: Thu Jul  2 06:02:54 UTC 2026
       root@dfbsd:/usr/obj/usr/src/sys/X86_64_GENERIC x86_64 (stock, INVARIANTS)
       (fix-validation kernel: #1: Thu Sep 10 08:43:37 UTC 2026, same tree + fix.diff)
Compiler: cc 8.3 [DragonFly] Release/2019-02-22
sysctl: net.inet.carp.allow=1 net.inet.carp.preempt=0 net.inet.carp.log=1(set during run)
Setup: tap0 10.0.0.1/24 (kldload if_tap), carp0 vhid 1 pass pocpass 10.0.0.100/24,
       state forced MASTER via SIOCSVH (setstate.c)
Frames injected by writing to /dev/tap0 (tapwrite -> if_input -> ether_input),
i.e. the real receive path.