Launch Byobu Automatically on Vagrant SSH

I can use SSH directly instead of Vagrant SSH command for interactive programs such as top or running tmux sessions. But I frequently just want to run Tmux or Byobu upon login. I can do:

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$ ssh -F ssh-config vagrant -t byobu

But still too much trouble to go through all SSH configuration steps. So, I ended up with two-step process:

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$ vagrant ssh

Now inside the guest machine, I immediately type:

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$ byobu

To bring up new Tmux session or attach existing sessions.