Comment by akerl_
7 years ago
This diverges pretty hard from your earlier comparison, between this scenario and the Linux kernel breaking userspace.
If a dev updates their code so it won’t run unless an kernel flag is enabled, the kernel hasn’t broken userspace, and kernel devs are unlikely to add a “fake-enabled-flag” to trick the userspace program, even if it’s popular.
Likewise, I don’t expect my DNS resolver to add in custom behavior if upstream DNS servers make breaking changes like this. In fact, I very much prefer the opposite: my DNS service should be as dumb as possible. I don’t want it making choices about how to modify DNS queries I do, or their results.
If an upstream site broke their DNSSEC config, would you lobby for Cloudflare to modify the results so resolution succeeded for their users?
Besides, my reading is:
Every other resolver supports EDNS
Archive.is only works with resolvers that support EDNS
Cloudflare decided not to support EDNS
That itself is a defendable decision but I do feel for a popular site they could implement some sort of fix.
responds 134.119.220.26
responds with HTML of the site.
I'm not a dig expert, but I believe this means it works without EDNS. I think that means archive.is is specifically blocking Cloudflare's servers, not blocking all non-EDNS requests.
Notably, Level3 and Hurricane Electric both appear to not use ECS, and archive.is resolves properly from those. Which seems to clarify that this isn’t a technical requirement for archive.is to work, it’s an intentional protest by the archive.is operators against Cloudflare.
Cloudflare does support EDNS. They just don't forward the client's subnet due to being privacy-oriented, doing which is optional and perfectly valid.
They need something that works for all sites.
If every other resolver works, then I expect Cloudflare to work.
The kernel hardcodes plenty of hacky things to get specific hardware to work.
When the Linux Kernel hardcodes an "acceptable DNS resolver" list into net/, then that argument might be valid, but for now, it isn't.
Archive.is operators are throwing a temper tantrum. It isn't in Cloud Flare or anyone else's best interest to appease them.