Software Update: Knot Resolver 5.2.1

Knot Resolver is an open source DNS recursive resolver written in C and LuaJIT. When you perform a dns lookup, a recursive resolver initially starts by asking the lookup query to a dns root server. This can then redirect to other servers, from where it can redirect to other servers and so on, until finally a server is reached that knows the answer or knows that the look-up is not possible. The latter can be the case if the name does not exist or the servers do not respond. The developers of CZ NIC released version 5.2.1 earlier this month with the following changes:

Improvements

• doh2: send Cache-Control header with TTL (#617, !1095)

Bug fixes

• fix map() command on 32-bit platforms; regressed into 5.2.0 (!1093)
• doh2: restrict endpoints to doh and dns query (#636, !1104)
• renumber: map to correct subnet when using multiple rules (!1107)