[DNSOP] default value of draft-ietf-dnsop-avoid-fragmentation

2021-03-14 Thread fujiwara 
Dear DNSOP participants,

Thanks very much for good comments for draft-ietf-dnsop-avoid-fragmentation.

These are my proposal of Section 3.3.  Default Maximum DNS/UDP payload size.

I'm not sure what to do with "MAY, "SHOULD", or "MUST",
so please give us your opinion.

If it is acceptable, I will submit -05.

---
3.3.  Default Maximum DNS/UDP payload size

   Default maximum DNS/UDP payload size depends on the connectivity of
   each node, it cannot be determined unconditinally.  However, there
   are good proposed values.

   Operators MAY select a good number from Table 1.

 ++==+==+
 | Source | IPv4 | IPv6 |
 ++==+==+
 |  minimal: RFC 4035 | 1220 | 1220 |
 ++--+--+
 | Software developpers / | 1232 | 1232 |
 | DNSFlagDay2020 propose |  |  |
 ++--+--+
 | This document proposes | 1400 | 1400 |
 ++--+--+
 |  maximum: ethernet MTU | 1472 | 1452 |
 |   1500 |  |  |
 ++--+--+
 |  calculate | MTU-20-8 | MTU-40-8 |
 ++--+--+

  Table 1: Default maximum DNS/UDP payload size

   However, operators of DNS servers SHOULD measure their path MTU to
   well-known locations on the Internet, such as [a-m].root-servers.net
   or [a-m].gtld-servers.net at setting up the servers.  The smallest
   value of path MTU is the server's path MTU to the Internet.  The
   server's maximum DNS/UDP payload size SHOULD be smaller than or equal
   to the reported path MTU minus IPv4/IPv6 header size (20/40) minus
   UDP header size (8).

   Details of default maximum DNS/UDP payload size is Appendix C.
-

--
Kazunori Fujiwara, JPRS 

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[DNSOP] Minutes of IETF 110 DNSOP WG published, please review

2021-03-14 Thread Benno Overeinder 

Dear DNSOP WG,

The minutes of our DNSOP WG meeting at the IETF 110 have been published. 
Many thanks to our note-taker Paul Hoffman.


Read and review it, and if there are any omissions, send feedback to the 
DNSOP chairs.


You can find the published minutes here: 
https://datatracker.ietf.org/meeting/110/materials/minutes-110-dnsop-00


Thanks,

Suzanne, Tim and Benno

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