We're seeing connectivity issues around us-west-2 for the past hour (since around 3:30 AM PST). AWS status page is green as always. Is anyone else experiencing issues?
Thanks for that - following up on your lead and checking https://www.ubuntu.com/usn/xenial, there seem to have been several unattended security upgrades issued yesterday. We checked several machines' /var/log/dpkg.log and see multiple upgrades around midnight UTC.