Inspired by e7dce43af3905a7a986ef6e3402bf6809ab90f16.
I'm using this configuration in my Vagrantfile:
config.vm.network :public_network, use_dhcp_assigned_default_route: true
Every once in a while the secondary network interface would not come
up properly and cause the init scripts to wait for ~ 3 minutes before
giving up and continue with booting.