Added support for Port forwarding in an IP aliased environment. The change
makes the following forwarding rule(s) possible.
Ex: eth0 is ip aliased to have a range of IP addresses 10.20.30.0/24.
In the Vagrant file, we can now have an entry like the following and
it will just work! Note the host port 8081 is the same for both .1 and .2.
Vagrant.configure("2") do |config|
config.vm.network "forwarded_port", guest: 80, host: 8080
config.vm.network "forwarded_port", guest: 81, host: 8081, host_ip: 10.20.30.1
config.vm.network "forwarded_port", guest: 82, host: 8081, host_ip: 10.20.30.2
end