No, it has to do with when connecting to a gateway the client should use that gateway as the DNS server through a search string.
For instance when I connect to my mifi (mobile wifi router) it sets a string in "/etc/resolv.conf" like this:
And in the router I've set where my queries should go.
But at home the router is at 192.168.0.1 and not that mifi router.
It should've been auto-magically altered on connection AFAIK.
It's not a big deal for me, I've added nameservers to resolv.conf countless of times in the past with:
"echo "nameserver blabla.bla.org" >> /etc/resolv.conf" also because I don't want my DNS queries to pass through Google owned ones.
But it could be an issue for others if this was a system bug. Looks like it isn't so that's good.
Read this if you're interested why I'm leary of certain DNS servers:
If you want to use one of their servers just use my string above (with sudo) and reblace blabla.bla.org with the given IP adresses.