[falcolas]

If Verisign is running the nameservers for .com and .net, it will cause DNS problems across the board. We'd have to rely on DNS caches until new .net and .com nameservers come up. This would impact not only new domain registrations, but DR grade migrations, and DNSSEC.

If coordinated with an attack against the root nameservers so we couldn't change the .com and .net nameservers, DNS would become a real disaster. If combined with some BGP trickery, you could even see domain names being poisoned.

We should be able to be worked around the damage eventually; but so much of the internet relies on so few root servers/hosts/routers.

[reitoei]

Would there a use case for decentralizing DNS into blockchain, or for creating an alternative?

[falcolas]

I think the problem with the blockchain is that it is relatively immutable, while the internet is anything but. Also, the cost for making a Namecoin change is inexpensive now, but if it were to take over full operations for even one TLD, that would not remain the case.

[cwkoss]

This is one of the goals of Namecoin, but I'm not sure how successful they've been so far.

[duaneb]

For some reasons to use DNS (e.g. service discovery) the latency associated with a blockchain would be prohibitive. Generally, I think it's an excellent application.