By the way, in my case it appears to be because mount can't resolve the host name of the CIFS file server. I think this is because systemd is trying to mount the filesystems before the nameserver is finished launching, so perhaps if bind9.service is enabled on the host, systemd needs to wait for it to start before mounting network filesystems?
By the way, in my case it appears to be because mount can't resolve the host name of the CIFS file server. I think this is because systemd is trying to mount the filesystems before the nameserver is finished launching, so perhaps if bind9.service is enabled on the host, systemd needs to wait for it to start before mounting network filesystems?