UPS Service fails on boot but works after GUI service toggle (failed precmd)

Hi good people.  Running TrueNAS12.0-RELEASE  I have my network UPS/nut setup working perfectly but it doesn't start automatically on boot - I have to go to the TrueNAS GUI Services and toggle UPS from "running" to not running then back again, before it's happy.

Relevant lines from my /var/log/messages post-bootup

Nov 23 13:22:59 GTnas01 1 2020-11-23T13:22:59.476967+11:00 GTnas01.<FQDN> root 1832 - - /etc/rc: WARNING: failed precmd routine for nut
Nov 23 13:22:59 GTnas01 1 2020-11-23T13:22:59.488491+11:00 GTnas01.<FQDN> upsmon 1840 - - UPS [GT-UPS-1@localhost:3493]: connect failed: Connection failure: Connection refused
Nov 23 13:22:59 GTnas01 1 2020-11-23T13:22:59.488509+11:00 GTnas01.<FQDN> upsmon 1840 - - Communications with UPS GT-UPS-1@localhost:3493 lost
Nov 23 13:23:00 GTnas01 1 2020-11-23T13:23:00.870172+11:00 GTnas01.<FQDN> collectd 1941 - - nut plugin: nut_connect: upscli_connect (localhost, 3493) failed: Connection failure: Connection refused

Under fault condition:

root@GTnas01[~]# ps auxw | grep ups
uucp       1835    0.0  0.0    11396    2824  -  Is   13:22     0:00.00 /usr/local/bin/upslog -s GT-UPS-1 -l /var/log/nut/ups.log -i 300
root       1838    0.0  0.0    11280    2812  -  Is   13:22     0:00.00 /usr/local/sbin/upsmon localhost
uucp       1840    0.0  0.0    11352    2820  -  S    13:22     0:00.14 /usr/local/sbin/upsmon localhost
root       1909    0.0  0.0    19040    8372  -  Is   13:22     0:00.00 sshd: /usr/local/sbin/sshd [listener] 0 of 10-100 startups (sshd)
root       4502    0.0  0.0     6936    2616  0  R+   13:59     0:00.00 grep ups
root@GTnas01[~]# ps auxw | grep nut
uucp       1835    0.0  0.0    11396    2824  -  Is   13:22     0:00.00 /usr/local/bin/upslog -s GT-UPS-1 -l /var/log/nut/ups.log -i 300
root       4504    0.0  0.0    11512    2916  0  S+   13:59     0:00.00 grep nut

root@GTnas01[/]# upsc GT-UPS-1@localhost
Error: Connection failure: Connection refused

After GUI toggling UPS service:

root@GTnas01[~]# ps auxw | grep ups
root       1909    0.0  0.0    19040    8372  -  Is   13:22      0:00.00 sshd: /usr/local/sbin/sshd [listener] 0 of 10-100 startups (sshd)
uucp       4788    0.0  0.0    21956    9740  -  Ss   14:07      0:00.00 /usr/local/libexec/nut/snmp-ups -a GT-UPS-1
uucp       4790    0.0  0.0    72860    2872  -  Ss   14:07      0:00.00 /usr/local/sbin/upsd
root       4798    0.0  0.0    11280    2812  -  Is   14:07      0:00.00 /usr/local/sbin/upsmon localhost
uucp       4799    0.0  0.0    11352    2820  -  S    14:07      0:00.00 /usr/local/sbin/upsmon localhost
uucp       4807    0.0  0.0    11396    2824  -  Is   14:07      0:00.00 /usr/local/bin/upslog -s GT-UPS-1 -l /var/log/nut/ups.log -i 300
root       4869    0.0  0.0     4888    2476  0  R+   14:08      0:00.00 grep ups
root@GTnas01[~]# ps auxw | grep nut
uucp       4788    0.0  0.0    21956    9740  -  Ss   14:07      0:00.00 /usr/local/libexec/nut/snmp-ups -a GT-UPS-1
uucp       4807    0.0  0.0    11396    2824  -  Is   14:07      0:00.00 /usr/local/bin/upslog -s GT-UPS-1 -l /var/log/nut/ups.log -i 300
root       4871    0.0  0.0    11068    2652  0  R+   14:09      0:00.00 grep nut


root@GTnas01[/var/log]# upsc GT-UPS-1@localhost
battery.runtime: 50400.00
battery.runtime.elapsed: 0.00
battery.voltage: 80.30
device.mfr: CYBERPOWER
device.model: OLS3000ERT2U
device.serial: 1S49P3000009
device.type: ups
driver.name: snmp-ups
driver.parameter.pollinterval: 2
driver.parameter.port: 192.168.27.73
driver.parameter.snmp_version: v1
driver.parameter.synchronous: no
driver.version: 2.7.4
driver.version.data: cyberpower MIB 0.1
driver.version.internal: 0.97
ups.firmware: 4.0.5
ups.mfr: CYBERPOWER
ups.model: OLS3000ERT2U
ups.serial: 1S49P3000009
ups.status: OL

My setup is fairly standard: Fresh install of TrueNAS 12.0-RELEASE on flash drive. Server with dual Xeon CPUs, 72GB ECC RAM. LSI HBA with 6x 8TB SATA drives in a pool of 3x mirror vdevs.  Intel 2x 10Gig SPF+ Ethernet NICs. Have a few jails. backup software, Heimdall, Plex.

UPS is as it shows in the readout above - network-attached not USB.

Should be an easy fix? I had a grep through various rc files but couldn't work out what was going on.

Please let me know what I need to provide you and I'll get it to you. Thanks kindly in advance.

UPDATE: Actually given how early I saw the message in the logs vs other network services I decided to enable the "Enable Netwait Feature" under Network > Global Configuration, and see that that has fixed the issue!

Thinking it's still worth raising the fault (now changed to "low") in case other people are pulling their hair out?