Re: [libvirt PATCH] network: add private chains only if there are networks adding iptables rules

Juan Quintela noticed that when he restarted libvirt he was getting extra iptables rules added by libvirt even though he didn't have any libvirt networks that used iptables rules. It turns out this also happens if the firewalld service is restarted. The extra rules are just the private chains, and they're sometimes being added unnecessarily because they are added separately in a global networkPreReloadFirewallRules() that does the init if there are any active networks, regardless of whether or not any of those networks will actually add rules to the host firewall. The fix is to change the check for "any active networks" to instead check for "any active networks that add firewall rules". (NB: although the timing seems suspicious, this isn't a new regression caused by the recently pushed f5418b427 (which forces recreation of private chains when firewalld is restarted); it was an existing bug since iptables rules were first put into private chains, even after commit c6cbe18771 delayed creation of the private chains. The implication is that any downstream based on v5.1.0 or later that cares about these extraneous (but harmless) private chains would want to backport this patch (along with the other two if they aren't already there)) Signed-off-by: Laine Stump <laine(a)redhat.com&gt; ---