I post regularly on Hacker News and know nothing about IPsec. The way networks work is generally a mystery for me and I consider it to be a magic black box. What bad news do you have for me?

Oh I love HN Dunning Krueger smugness, especially with specifics of one particular network security spec that has a lot of alternatives. Truly, if you've never used IPSec, get out of my HN, you peasant.