Here’s how I got it working.
I added port forwarding to vagrant and then I launch browser-sync from within the vm. Everything works now at http://example.dev:3000
and http://example.dev:3001
.
Here’s what I added to my Vagrantfile:
config.vm.network :forwarded_port, guest: 3000, host: 3000, auto_correct: true
config.vm.network :forwarded_port, guest: 3001, host: 3001, auto_correct: true