Vagrant NFS mount timed out

There can be a couple of reasons why your NFS times out.

The most likely is the Firewall

On OS X check if NFSD is blocked. It should be allowed incoming connections.

Check your /etc/exports

Vagrant should have edited the file, if not, you may have some problems with permissions.

# VAGRANT-BEGIN: 501 e50326d8-bb53-49a6-8bc7-e4fac0e87807
"/Users/kevinsimper/myproject/coderwall" 10.100.100.10 -alldirs -mapall=501:20
# VAGRANT-END: 501 e50326d8-bb53-49a6-8bc7-e4fac0e87807

Try restarting nfs

sudo /sbin/nfsd restart