On Wed, Apr 30, 2014 at 10:01 AM, Keith Keller kkeller@wombat.san-francisco.ca.us wrote:
No settings might be better. If I take my laptop from one site to another, keeping my previous resolv.conf intact, and NM doesn't remove it, then my laptop will try to query the previous site's DNS. They may not like that; depending on how paranoid they are, they may even take measures to block my traffic. Even if not, I may see some really bizarre DNS behavior which could be difficult to troubleshoot, whereas having no DNS at all will be very obvious very quickly.
So you only have one network interface active at a time? Our servers typically have at least 6 NICs and it is pretty common to have at least 4 active on different subnets. And bringing up a new interface does _not_ mean I always want to use the DNS servers or default route DHCP might offer.