The current link [1] is a lot more concise and informative (specifically, what users should do) IMO. The blog post expands a little on BGP hijacking but honestl

The current link [1] is a lot more concise and informative (specifically, what users should do) IMO. The blog post expands a little on BGP hijacking but honestly it could be summarized in one short paragraph. [1] https://community.letsencrypt.org/t/acme-v1-v2-validating-challenges-from-multiple-network-vantage-points/112253 https://community.letsencrypt.org/t/acme-v1-v2-validating-ch...