guest_uname (stock, baseline kernel):
  DragonFly dfbsd 6.5-DEVELOPMENT DragonFly 6.5-DEVELOPMENT #0: Thu Jul  2 06:02:54 UTC 2026     root@dfbsd:/usr/obj/usr/src/sys/X86_64_GENERIC  x86_64

patched kernel (fix validation):
  DragonFly 6.5-DEVELOPMENT #1: Tue Oct 20 12:55:23 UTC 2026     root@dfbsd:/usr/obj/usr/src/sys/X86_64_GENERIC

compiler: cc 8.3 [DragonFly] Release/2019-02-22
kernel: stock INVARIANTS X86_64_GENERIC (clean-source with-src snapshot); patched = same + fix.diff, make nativekernel + installkernel
NFS: in-kernel client, NFSv3 over UDP, AUTH_SYS
client sysctls at boot: vfs.nfs.access_cache_timeout=5, vfs.nfs.neg_cache_timeout=3 (serial console)
mount used: mount_nfs -o port=2049,udp 127.0.0.1:/ct|/lk|/mk|/nd /mntN
guest services during PoC: only the PoC userland fakesrv (rpcbind :111, mountd :779, nfs :2049 on 127.0.0.1); system rpcbind/nfsd NOT running
unprivileged trigger user: maxx uid=1001 (su -m maxx -c); mount setup done by root (documented precondition)
vnode sysctls: kern.maxvnodes (default 109306), debug.numvnodes, debug.cachedvnodes, debug.inactivevnodes, debug.activevnodes
vnlru kthread visible in ps as "vnlru" (kernel thread, PID -1)