Libvirt APIs for creating virtual networks

[Laine Stump]

On 5/7/20 2:18 PM, Santhosh Kumar Gunturu wrote:
> 
> Does the libvirt has any capabilities to get the statistics of DHCP 
> server ? How many packets received/sent ?
> Is there a way to get those statistics if the APIs are not available ?

libvirt spawns a dnsmasq instance for each network to handle DHCP 
services, so libvirt itself doesn't see any of that traffic. A quick 
search for "statistic" in the dnsmasq man page shows that when you send 
the dnsmasq process a SIGUSR1, it will write a bung of statistics to the 
system log, and that you can apparently also get some of the data via 
sending a special dns request to the server. Just search for 
"statistics" in  "man dnsmasq". I don't know if any of the information 
they're logging is what you're after, but as far as I can see, that's 
what is available and how to get to it.