NFS won't mount on boot

I'm trying to mount an NFS share on /storage/NFS on a Pi 4 running LibreELEC 9.2.6. I've made a storage-NFS.mount file following the template, and it works great when I run systemctl start storage-NFS.mount. However, even after running systemctl enable storage-NFS.mount and making sure the symlink is created in multi-user.target.wants, it won't work at boot. I've tried with and without the network-online.service parts, as suggested in this thread. I've even put it in /storage/.config/autostart.sh, which is chmod +x and works when I run it manually, but won't run (or can't get network) at boot, despite adding a delay as suggested on the wiki here and even after adding a while loop that greps ifconfig to make sure the Ethernet interface is up.

I have no problems mounting NFS on boot with any other distro, or dealing with systemd, but this just isn't working and I'm stumped. Does anyone have any suggestions?

/storage/.config/system.d/storage-NFS.mount:

[Unit]
Description=nfs mount script
Requires=network-online.service   # Behaves the same with
After=network-online.service      # or without these two lines
Before=kodi.service

[Mount]
What=192.168.1.10:/storage/media
Where=/storage/NFS
Options=
Type=nfs

[Install]
WantedBy=network-online.target   # I've tried switching
WantedBy=multi-user.target       # between both of these

/storage/.config/autostart.sh:

#!/bin/bash
(
 sleep 5
 while ! ifconfig | grep -F "UP BROADCAST RUNNING MULTICAST" > /dev/null; do
  sleep 1
 done
 echo "Network seems up, mounting NFS"
 mount -t nfs 192.168.1.10:/storage/media /storage/NFS
)&

I've already tried adding the mount command to autostart.sh, as well as a delay in case the network isn't up yet. The mountpoint is an empty folder after boot. If I SSH in and run autostart.sh it works perfectly. My Pi is connected to Ethernet, not WiFi.

Quote from mglae

Try adding this dependency to service:

Code

After=time-sync.target

That worked, thank you!

For reference, this is what I ended up with:

[Unit]
Description=nfs mount script
Before=kodi.service
After=time-sync.target

[Mount]
What=192.168.1.10:/storage/media
Where=/storage/NFS
Options=
Type=nfs

[Install]
WantedBy=network-online.target

Quote from Klojum

Just wondering what device you use as a NFS server...?

I'm using Ubuntu Server 18.04 here.

I'm using Ubuntu Server 18.04 as well.