Bug 15859 - IPv4-only member server in mixed environment: No logon servers are currently available to service the logon request
Summary: IPv4-only member server in mixed environment: No logon servers are currently ...
Status: NEW
Alias: None
Product: Samba 4.1 and newer
Classification: Unclassified
Component: Winbind (show other bugs)
Version: 4.22.1
Hardware: All All
: P5 normal (vote)
Target Milestone: ---
Assignee: Samba QA Contact
QA Contact: Samba QA Contact
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2025-05-21 14:02 UTC by Björn Baumbach
Modified: 2025-05-21 15:23 UTC (History)
1 user (show)

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Description Björn Baumbach 2025-05-21 14:02:23 UTC 
Running winbind on a IPv4-only AD member server, while the AD DCs have IPv4 and IPv6 addresses, leads to issues.

Beginning with Samba 4.22.0 the affected system show errors like:
source3/winbindd/winbindd_ads.c:1150(lookup_groupmem) ads_ranged_search failed with: No logon servers are currently available to service the logon request.

Before Samba 4.22.0 I see errors like
cldap_multi_netlogon_send: cldap_socket_init failed for ipv6:(...):389  error NT_STATUS_NETWORK_UNREACHABLE
which do not occur with Samba 4.22.0 and newer.

Workaround:
Specify IPv4 addresses of the DCs via smb.conf "password server" option.