Bug 26258 – Absturz des DHCPd bei fehlendem Shared Subnet

Bug 26258 - Absturz des DHCPd bei fehlendem Shared Subnet


Summary:	Absturz des DHCPd bei fehlendem Shared Subnet

Status:	NEW

Product:	UCS
Classification:	Unclassified
Component:	DHCP
Version:	UCS 4.4
Hardware:	Other Linux

Importance:	P5 normal (vote)
Target Milestone:	---
Assigned To:	UCS maintainers
QA Contact:

URL:
Keywords:

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2012-02-27 13:51 CET by Andreas Büsching
Modified:	2019-08-09 11:42 CEST (History)
CC List:	2 users (show)

See Also:
What kind of report is it?:	Bug Report
What type of bug is this?:	4: Minor Usability: Impairs usability in secondary scenarios
Who will be affected by this bug?:	1: Will affect a very few installed domains
How will those affected feel about the bug?:	2: A Pain – users won’t like this once they notice it
User Pain:	0.046
Enterprise Customer affected?:
School Customer affected?:
ISV affected?:
Waiting Support:
Flags outvoted (downgraded) after PO Review:
Ticket number:
Bug group (optional):	Troubleshooting
Max CVSS v3 score:

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.

Description Andreas Büsching

2012-02-27 13:51:21 CET

Das Problem wurde aus Bug #25387 extrahiert:

2. Wird kein "Shared Subnet" angelegt, stürzt der DHCPd ab, da dessen
Konfiguration damit ungültig ist: /var/log/daemon.log
Dec  9 02:52:26 backup33 dhcpd: LDAP line 11: empty shared-network decl
Dec  9 02:52:26 backup33 dhcpd: }
Dec  9 02:52:26 backup33 dhcpd:  ^
Dec  9 02:52:26 backup33 dhcpd: LDAP: cannot parse dhcpService entry
'cn=phahn.qa,cn=dhcp,dc=phahn,dc=qa'
Dec  9 02:52:26 backup33 dhcpd: Configuration file errors encountered --
exiting

Comment 1 Florian Best

2017-02-09 14:02:07 CET

Still valid?

Comment 2 Philipp Hahn

2019-08-09 11:42:34 CEST

Yes, still in UCS-4.4
  univention-install univention-dhcp
  udm dhcp/shared create --position "$(udm dhcp/service list|sed -ne 's/^DN: //p;T;q')" --set name=bug26258
  systemctl restart isc-dhcp-server.service

> LDAP line 3: empty shared-network decl
> }
>  ^

  ucr set dhcpd/ldap/debug=yes  # Bug #49281
  cat /var/log/dhcp-ldap-startup.log
> #DHCP Service
>  shared-network "bug26258" {
> }
...

This is an upstream bug in server/ldap.c:2387 ldap_generate_config_string(), where oc:dhcpSharedNetwork is parsed and emitted by ldap_parse_shared_network() even when it does not contain at least one required oc:dhcpSubnet.