What does cifs_mount failed w/return code = -111 indicate?

Question

Command:

sudo mount -t cifs //<server>/<share> -o username=user@domain,password=**** /mnt/<mountpoint>

error message:

Unable to find suitable address.

The syslog has:

CIFS VFS: Error connecting to socket. Aborting operation. CIFS VFS: cifs_mount failed w/return code = -111

When I check out the documentation for mount via man mount

I see the following information about the error codes:

   RETURN CODES
   mount has the following return codes (the bits can be ORed):

   0      success
   1      incorrect invocation or permissions
   2      system error (out of memory, cannot fork, no more loop devices)
   4      internal mount bug
   8      user interrupt
   16     problems writing or locking /etc/mtab
   32     mount failure
   64     some mount succeeded

So does -111 mean the same thing as 1? If so, how can you diagnose if it's permissions or the command isn't correct?

Answer 1

111 = 64+32+8+4+2+1

So it meant to tell you that you hit every error except 16.

On my Ubuntu 14.04, I had to add -o sec=ntlmv2 or it will always give me 111 error, but I don't need that option on my Ubuntu 15.04. Isn't it confusing?