[Samba] Problem Joining a ubuntu 12.04+samba to a W2k DC

[Carlos R. Pena]

Hello to everybody in the forum.

I am trying to join a ubuntu server as a member of a domain controlled 
by a Windows 2000 Server.

When i execute the join the system return de followin error:

sudo net ads join -U administrator
Enter administrator's password:
Using short domain name -- FAMILY
Joined 'CHILD-SERVER' to realm 'Family.local'
net_update_dns_internal: Failed to connect to our DC!
DNS update failed!

Can anybody help me? Any ideas?

Sincerely,

Carlos

****************************************************
Here is the detailed information about my installation.


Domain      = FAMILY.LOCAL

DC
Server Name = PARENT-SERVER
IP          = 26.4.0.1
OS          = Windows 2000 Server
Admin User  = administrator


Member Server to be Joined to the Domain
Server Name = CHILD-SERVER
IP          = 26.4.0.2
OS          = Ubuntu 12.04
Admin User  = administrator



*************************************************************************
/etc/hosts

127.0.0.1 CHILD-SERVER CHILD-SERVER.FAMILY.LOCAL localhost
26.4.0.1 PARENT-SERVER PARENT-SERVER.FAMILY.LOCAL
26.4.0.2 CHILD-SERVER CHILD-SERVER.FAMILY.LOCAL

# The following lines are desirable for IPv6 capable hosts
::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters

**************************************************************************
/etc/krb5.conf

[libdefaults]
         default_realm = FAMILY.LOCAL
         ticket_lifetime = 24000
         clock_skew = 300


[realms]
         FAMILY.LOCAL = {
                 kdc = PARENT-SERVER.FAMILY.LOCAL
                 admin_server = PARENT-SERVER.FAMILY.LOCAL
                 default_domain = FAMILY.LOCAL
         }


[domain_realm]
         .family.local = FAMILY.LOCAL
         family.local = FAMILY.LOCAL


********************************************************************************
/etc/samba/smb.conf

[global]
    security = ads
    realm = FAMILY.LOCAL
    password server = 26.4.0.1
    workgroup = FAMILY
    server string = %h server (Samba, Ubuntu)
    idmap uid = 10000-20000
    idmap gid = 10000-20000
    winbind enum users = yes
    winbind enum groups = yes
    winbind cache time = 10
    winbind use default domain = yes

    client use spnego = yes
    client ntlmv2 auth = yes
    encrypt passwords = true
    restrict anonymous = 2

    domain master = no
    local master = no
    preferred master = no
    os level = 0

[OurShare]
    commend = Our Share
    valid users = @FAMILY\PEOPLE, FAMILY/ADMINISTRATOR, administrator
    admin users = FAMILY/ADMINISTRATOR, administrator
    browseable = no
    path = /OurShare
    read only = no
    public = no
    force create mode = 777
    create mask = 777
    security mask = 777
    force security mode = 777

    directory mask = 2777
    force directory mode = 2777
    directory security mask = 2777
    force directory security mode = 2777