Tailscale crossword: Any port in a storm

December 21 is celebrated as National Crossword Puzzle Day, marking the anniversary of the first crossword puzzle published in the New York World. At Tailscale, a company where many employees enjoy puzzles, this occasion is observed by creating and sharing a new Tailscale-themed crossword puzzle, which is said to be of medium difficulty, comparable to a Wednesday or Thursday New York Times puzzle. The puzzle is published a day early to provide enthusiasts with extra time to solve it, and can be accessed either through an embedded solver or as a downloadable PDF for those who prefer solving on paper. Participants are encouraged to share their solving experiences and results on social media platforms like Mastodon, Bluesky, or X (formerly known as Twitter).