Stephane Bortzmeyer wrote:
On Tue, Sep 12, 2017 at 09:50:37AM +0000,
  Lanlan Pan<abby...@gmail.com>  wrote
  a message of 210 lines which said:

ATR make Authoritative Servers send normal big response packet
before they try to send TC response for large RRsets ?

Yes, section 3. "it is suggested a timer to delay the second truncated
response to around 10 millisecond which can be configured by local
operation". (In the spirit of RFC 6555.)

noting, 10ms isn't enough. packet reordering due to multipath load balancing has been observed as high as 60ms due to "buffer bloat".

--
P Vixie

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