DNS not resolvable

[gavin-webstuff]

Probably an edge case but some scenarios domain names are not resolvable and vague errors like unable to fetch packages etc.
The solution is simple in the vagrant box run

$ echo 'nameserver 8.8.8.8' | sudo tee /etc/resolvconf/resolv.conf.d/tail && sudo resolvconf -u 

which outputs the google dns server into a tail file which gets appended to resolv.conf and is persistent across reboots.

resolvconf -u rebuilds the resolv.conf file