Bug 846970 - firewalld prevents communication between libvirt VMs
firewalld prevents communication between libvirt VMs
Product: Fedora
Classification: Fedora
Component: firewalld (Show other bugs)
Unspecified Unspecified
unspecified Severity unspecified
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Assigned To: Thomas Woerner
Fedora Extras Quality Assurance
Depends On:
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Reported: 2012-08-09 06:33 EDT by Stef Walter
Modified: 2012-10-10 12:08 EDT (History)
2 users (show)

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2012-10-10 12:08:07 EDT
Type: Bug
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Stef Walter 2012-08-09 06:33:42 EDT
Description of problem:

I have a libvirt setup with a virtual NAT network and multiple VMs which have NICs on that virtual network. The firewalld rules prevent TCP communication (ICMP works fine) between the VMs in that virtual network.

If I 'iptables -F' then communication is restored.

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

Name        : firewalld
Arch        : noarch
Version     : 0.2.6
Release     : 1.fc18

Name        : iptables
Arch        : x86_64
Version     : 1.4.14
Release     : 3.fc18

Name        : libvirt
Arch        : x86_64
Version     : 0.9.13
Release     : 3.fc18

How reproducible:

Every time.

Steps to Reproduce:
1. Make sure you have a NAT network in virt manager.
2. Create multiple VMs using that network.
3. Try to access any TCP service from one VM to another.
Actual results:

Connection fails.

Expected results:

Connection succeeds.
Comment 1 Thomas Woerner 2012-10-10 12:08:07 EDT
Fixed in rawhide and F-18. libvirt now has support for firewalld.

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