Bug 618661

Summary:	libvirtd fails to insert needed iptables rules for NAT network due to missing CHECKSUM module
Product:	Red Hat Enterprise Linux 6	Reporter:	Mauricio Teixeira <mteixeira>
Component:	iptables	Assignee:	iptables-maint-list <iptables-maint-list>
Status:	CLOSED DUPLICATE	QA Contact:	qe-baseos-daemons
Severity:	high	Docs Contact:
Priority:	low
Version:	6.0	CC:	pknirsch, twoerner
Target Milestone:	rc	Keywords:	RHELNAK
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2010-07-27 15:44:55 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Mauricio Teixeira 2010-07-27 13:52:38 UTC

Description of problem:

libvirtd fails to insert needed iptables rules for NAT network due to missing CHECKSUM module, which prevents DHCP from working on virtual network interfaces.

Version-Release number of selected component (if applicable):

libvirt-0.8.1-15.el6.x86_64
iptables-1.4.7-2.el6.x86_64

How reproducible:

Always.

Steps to Reproduce:
1. service libvirtd restart
2. (watch /var/log/messages)

Actual results:

libvirtd: 10:42:46.110: error : virRunWithHook:933 : internal error '/sbin/iptables --table mangle --insert POSTROUTING --out-interface virbr0 --protocol udp --destination-port 68 --jump CHECKSUM --checksum-fill' exited with non-zero status 2 and signal 0: iptables v1.4.7: unknown option `--checksum-fill'#012Try `iptables -h' or 'iptables --help' for more information.#012
libvirtd: 10:42:46.110: warning : networkAddIptablesRules:851 : Could not add rule to fixup DHCP response checksums on network 'default'

Expected results:

Should not give error.

Additional info:

# /sbin/iptables --table mangle --insert POSTROUTING --out-interface virbr0 --protocol udp --destination-port 68 --jump CHECKSUM
iptables v1.4.7: Couldn't load target `CHECKSUM':/lib64/xtables/libipt_CHECKSUM.so: cannot open shared object file: No such file or directory
# rpm -V iptables
(nothing)

Comment 2 RHEL Program Management 2010-07-27 14:18:11 UTC

This issue has been proposed when we are only considering blocker
issues in the current Red Hat Enterprise Linux release.

** If you would still like this issue considered for the current
release, ask your support representative to file as a blocker on
your behalf. Otherwise ask that it be considered for the next
Red Hat Enterprise Linux release. **

Comment 3 Phil Knirsch 2010-07-27 14:43:11 UTC

What kernel version please?

Thanks & regards, Phil

Comment 4 Mauricio Teixeira 2010-07-27 15:00:31 UTC

2.6.32-52.el6.x86_64