There is a delay during boot when the rpc-statd.service is starting causing the first nfs mounts to take long time

Issue

• Within /etc/fstab I have a NFS mount (/mnt). When I boot the server, the boot process hangs for a while (~45 seconds) at the mount for this NFS share with messages:

A start job is running for NFS status monitor for NFSv2/3 locking`
A start job is running for NFS /mnt

• Boot with NFS mount point in /etc/fstab takes a long time when nfsvers=3 is set as mount option.
• Mounting an NFS share following reboot takes exactly 1 minute to start:

# time mount -t nfs -o vers=3 example.com:/share /mnt/nfs

real        1m0.417s
user       0m0.023s
sys         0m0.031s