Lets configure homestead.rb to update hosts file using hostsupdater plugin. in case if you have not yet added this plugin, run

vagrant plugin install vagrant-hostsupdater

from your command prompt.
Open homestead.rb file in your favorite text editor.
Find this block at the end, (You can set anywhere but i prefer to add my customizations at the end of the file.)

  # Configure Blackfire.io
    if settings.has_key?("blackfire")
      config.vm.provision "shell" do |s|
        s.path = scriptDir + "/blackfire.sh"
        s.args = [
          settings["blackfire"][0]["id"],
          settings["blackfire"][0]["token"],
          settings["blackfire"][0]["client-id"],
          settings["blackfire"][0]["client-token"]
        ]
      end
    end

And add following code snippet next to the code above.

# Updating the hosts file with all the sites that are defined in Homestead.yaml
if Vagrant.has_plugin?("vagrant-hostsupdater") && settings["hosts_file_additions"] == true
     hosts = []
     settings["sites"].each do |site|
      hosts.push(site["map"])
    end
     config.hostsupdater.aliases = hosts
 end

Save the file.
Now, lets add hosts in "Homestead.yaml" , usually located in (user.homestead) directory.
Find the site you want to update hosts for.

sites:
    - map: yourdevdomain.app
      to: /home/www/laravel/public
      hosts: 192.168.88.88

"hosts: 192.168.88.88" is the IP we want our "map: yourdevdomain.app" to be pointed to.
at the end of "Homestead.yml", Add

hosts_file_additions: true

Save the file.
Close vagrant if already opened with.

vagrant halt

Run the

vagrant up --provision 

command.
And you will be able to access "yourdevdomain.app".
You can check the "hosts" file, to see the host is updated.