Jason, Did you notice this commit [1] from Sultan Alsawaf? [1] ratelimiter: fix hashing and hashmap searching for ipv4 addresses; https://git.zx2c4.com/WireGuard/commit/?h=sa/20170623&id=8da15aa96cdf918d8a98cf2caaefb475cadee355 Greats, René van Dorst.