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.