Why is Raspbian's CIFS share not mounted on startup?

Question

linux

The Cifs share is not mounted automatically, but manually (mount -a) everything goes like clockwork.
What will be the assumptions, Lord!?

[email protected]:~ $ cat /etc/fstab
proc            /proc           proc    defaults          0       0
PARTUUID=cee2205a-01  /boot           vfat    defaults          0       2
PARTUUID=cee2205a-02  /               ext4    defaults,noatime  0       1
# a swapfile is not a swap partition, no line here
#   use  dphys-swapfile swap[on|off]  for that
UUID=DE9AEA409AEA1535 /home/pi/mnt/hdd ntfs-3g uid=1000,gid=1000,umask=0022,sync,auto,rw 0 0
//srvip/Internet /home/pi/mnt/sb cifs username=sb1806,password=1,iocharset=utf8,file_mode=0777,dir_mode=0777, 0 0

Answer 1

Because fstab is processed before the network comes up. Add a mount option _netdev.