#mount.cifs //ip/division /mnt/division -o username=bob@dude-uk,password=myscretpass,vers=2.1
dmesg:
Status code returned 0xc000006d STATUS_LOGON_FAILURE
CIFS VFS: Send error in SessSetup = -13
CIFS VFS: cifs_mount failed w/return code = -13

No dialect specified on mount. Default has changed to a more secure dialect, SMB2.1 or later (e.g. SMB3), from CIFS (SMB1). To use the less secure SMB1 dialect to access old servers which do not support SMB3 (or SMB2.1) specify vers=1.0 on mount.

#mount.cifs //ip/division /mnt/division -o username=bob@dude-uk,password=myscretpass,vers=2.1,sec=krb5
mount error(126): Required key not available

#mount.cifs //ip/division /mnt/division -o username=bob@dude-uk
Password for bob@dude-uk@//ip/division:
mount error(13): Permission denied