Linux SMB to \domainname ends up "tree connect failed: NT_STATUS_DUPLICATE_NAME "

Issue:

From CentOS7 machine:

smbclient -L %domainname%.com --user=%username%

Result:

tree connect failed: NT_STATUS_DUPLICATE_NAME

This is especially when I try to connect to //domainname.com, which would end up being like //domainname.com/sysvol or //domainname.com/netlogon.

Overall the end goal is to connect to a DFS share that lives off the domainname.

Attemps and results:

smbclient -L %Aservername% --user=%username% = Works fine

smbclient -L %IPaddress(of any server or DC)% --user=%username% = Works fine

smbclient -L %domainname% --user=%username% = DuplicateName prompt

I’ve tried adding a CNAME in Windows DNS like %TestName% to %domainname%, but it still comes up with duplicate name.

In CentOS /etc/hosts I’ve mapped %domainname% to %testname%, but it still comes up with duplicate name.

In CentOS /etc/hosts I’ve mapped IP of DC1 to %testname%

In CentOS /etc/hosts I’ve mapped IP of DC2 to %testname%

In CentOS /etc/hosts I’ve mapped IP of DC3 to %testname%, but it still comes up with duplicate name.

* Firewall has been turned off for this testing.

Any help would be appreciated. I’ve spent many hours now trying to sort this out.

create  cifs.spnego     *       *               /usr/sbin/cifs.upcall -c %k
create  dns_resolver    *       *               /usr/sbin/cifs.upcall %k