[nsd-users] NSD 4.3.8rc2 pre-release

Paul Wouters paul at nohats.ca
Thu Oct 7 12:27:28 UTC 2021

On Thu, 7 Oct 2021, Wouter Wijngaards via nsd-users wrote:

> Cookies are a problem for when there are several servers.

You mean anycast?

> Those servers
> have to coordinate the cookie responses, and there are configuration
> options for that. But the default on was causing the trouble by default,
> instead of a more cautious default off, that does not cause the problem
> all of a sudden after an upgrade.

understood. But of course now we keep having the problem of needing to
answer to spoofed requests and being part of DDoS attacks :)

So I am trying balance the issues with the option. I'm more tempted to
leave it enabled to add DDoS protection, and assume server operators
of anycast clouds have their process in place for doing proper upgrades
of all their servers at the same time, and not run OS default configs.

So to me, it still seems better to enable this per default.


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