DNS protocol tweaks¶
Following settings change low-level details of DNS protocol implementation. Default values should not be changed except for very special cases.
- net.bufsize([udp_downstream_bufsize][, udp_upstream_bufsize])¶
Get/set maximum EDNS payload size advertised in DNS packets. Different values can be configured for communication downstream (towards clients) and upstream (towards other DNS servers). Set and also get operations use values in this order.
-- set downstream and upstream bufsize to value 4096 > net.bufsize(4096) -- get configured downstream and upstream bufsizes, respectively > net.bufsize() 4096 -- result # 1 4096 -- result # 2 -- set downstream bufsize to 4096 and upstream bufsize to 1232 > net.bufsize(4096, 1232) -- get configured downstream and upstream bufsizes, respectively > net.bufsize() 4096 -- result # 1 1232 -- result # 2
Module workarounds resolver behavior on specific broken sub-domains. Currently it mainly disables case randomization.
modules.load('workarounds < iterate')