new boot message: "/etc/rc: WARNING: $zfskeys_enable is not set properly - see rc.conf(5)."?

From: Mark Millard via freebsd-current <freebsd-current_at_freebsd.org>
Date: Thu, 09 Dec 2021 02:28:59 UTC
As of my update to (some line splitting applied):

# uname -apKU
FreeBSD CA72_UFS 14.0-CURRENT FreeBSD 14.0-CURRENT #25 main-n251456-22c4ab6cb015-dirty:
Tue Dec  7 19:38:53 PST 2021
root@CA72_16Gp_ZFS:/usr/obj/BUILDs/main-CA72-nodbg-clang/usr/main-src/arm64.aarch64/sys/GENERIC-NODBG-CA72
arm64 aarch64 1400043 1400043

my boot sequences are getting a report of:

# dmesg -a | grep zfsk
/etc/rc: WARNING: $zfskeys_enable is not set properly - see rc.conf(5).

for the likes of a system (aarch64 example) based on:

# gpart show
=>        40  2000409184  ada0  GPT  (954G)
          40      409600     1  efi  (200M)
      409640  1740636160     2  freebsd-ufs  (830G)
  1741045800   117440512     3  freebsd-swap  (56G)
  1858486312   134217728     4  freebsd-swap  (64G)
  1992704040     7705184        - free -  (3.7G)

But I also get the notice for a system (aarch64 again) based on:

# gpart show
=>        40  1875384928  nda1  GPT  (894G)
          40      532480     1  efi  (260M)
      532520        2008        - free -  (1.0M)
      534528   515899392     2  freebsd-swap  (246G)
   516433920    20971520        - free -  (10G)
   537405440  1337979528     3  freebsd-zfs  (638G)

The amd64 system gets the same message.

The note to see rc.conf(5) is misleading for main 22c4ab6cb015 :

# man 5 rc.conf | grep zfsk
#

===
Mark Millard
marklmi at yahoo.com
( dsl-only.net went
away in early 2018-Mar)