Comment 1 for bug 1813787

I think (1) and (2) will both help, with the provisioning block probably working in more cases perhaps.

The other change is batching the DVR ARP entry processing, which there is another bug for and has been proposed a couple of times, but nothing has merged yet. I believe that is one of the longer operations when creating the router.

Maybe figuring out where most time is spent is a good first step so we can prioritize what area to address first.