When SSHing to your BUG, you may notice a second or two delay before you get a prompt, even if you're just connecting over the USB ethernet connection from your computer.
This typically happens because the SSH daemon (dropbear) on the BUG is trying to do a DNS lookup on your IP address. If it can't find a DNS entry, or can't get to a DNS server, it can take a few seconds before it will give up.
To get round this you can add an entry for your computer to your BUG's hosts file. For example, if you're using the USB ethernet connection, your BUG is likely 10.10.10.10 and your computer is likely 10.10.10.1. In that case edit your BUG's hosts file (/etc/hosts) and add a line that reads:
It doesn't actually matter what hostname you put in there, unless you actually want to refer to your computer by that hostname from the BUG; just the act of having an entry will allow the DNS lookup by the SSH daemon to succeed, thereby resulting in drastically quicker SSH connections to your BUG.