Trying to mount NFS and CIFS shares without the appropriate packages installed produces super obfuscated error messages.

VFS: \\192.168.0.0\Share error -9 on ioctl to get interface list

VFS: cifs_mount failed w/return code = -13

So start with installing cifs-utils and nfs-common packages (this is on Debian).

Add entries to /etc/fstab for CIFS / Samba:

//192.168.0.1/Public   /mnt/public    cifs  defaults,noatime,nosuid,file_mode=0666,dir_mode=0777,credentials=/home/you/.smbpasswd,_netdev,nofail,x-systemd.automount 0 0
//192.168.0.1/ReadOnly /mnt/readonly  cifs  defaults,ro,credentials=/home/you/.smbpasswd,_netdev,nofail,x-systemd.automount 0 0

Or for NFS:

192.168.0.1:/nfs/Public  /mnt/nfs-public   nfs  defaults,nosuid,vers=3,_netdev,nofail,x-systemd.automount 0 0

After editing, run systemctl daemon-reload.

The .smbpasswd file with your NAS user and password:

username=franta
password=heslo

The automount option should result in the network shares to be mounted on the first access and not block boot in case it’s not connected.