Re: [libvirt] [PATCH 1/3] network driver: Start dnsmasq even if no dhcp ranges/hosts are specified.

1) networkBuildDnsmasqArgv() = all uses of ipdef are protected from NULL dereference. (this patch doesn't change indentation, to make review easier. The next patch will change just the indentation). ipdef is intended to point to the first IPv4 address with DHCP info (or the first IPv4 address if none of them have any dhcp info). 2) networkStartDhcpDaemon() = if the loop looking for an ipdef with DHCP info comes up empty, we then grab the first IPv4 def from the list. Also, instead of returning if there are no IPv4 defs, we just return if there are no IP defs at all (either v4 or v6). This way a network that is IPv6-only will still get dnsmasq listening for DNS queries. 3) in networkStartNetworkDaemon() - we will startup dhcp not just if there are any IPv4 addresses, but also if there are any IPv6 addresses. @@ -1678,7 +1689,7 @@ networkStartNetworkDaemon(struct network_driver *driver,

/* start dnsmasq if there are any IPv4 addresses */ - if (v4present && networkStartDhcpDaemon(network) < 0) + if ((v4present || v6present) && networkStartDhcpDaemon(network) < 0)