Opened 10 years ago

Closed 9 years ago

#13 closed technical (fixed)

Use of Zero UDP Checksums (in IPv4 and IPv6) Requires Analysis

Reported by: mrw@… Owned by:
Priority: major Component: draft-ietf-lisp
Severity: - Keywords: UDP checksums
Cc:

Description (last modified by hartmans-ietf@…)

Research (the Stone/Partridge? paper) and prior experience (with NFS
and IS-IS, among others) have indicated that it is (at least
sometimes) a very bad idea to disable and/or bypass UDP or IP
checksums. References:


We have proposed disabling the IPv4 UDP checksum and effectively
disabling both the IPv6 header and UDP checksum in IPv6. As part of
making this decision in a responsible manner, we need to perform (and
document) an analysis of the implications of that choice, both on LISP
itself and on other nodes and applications that have to co-exist with
LISP.

Change History (4)

comment:1 in reply to: ↑ description Changed 10 years ago by hartmans-ietf@…

  • Description modified (diff)

Replying to mrw@…:

Research (the Stone/Partridge? paper) and prior experience (with NFS
and IS-IS, among others) have indicated that it is (at least
sometimes) a very bad idea to disable and/or bypass UDP or IP
checksums. References:

comment:2 Changed 10 years ago by hartmans-ietf@…

As an individual I'm aware that various parts of this analysis have been done; some of it was even discussed on the list. However to the best of my knowledge, no one has attempted to close out this issue.

comment:3 Changed 9 years ago by jmh@…

  • Resolution set to fixed
  • Status changed from new to resolved

The working group has agreed to use 0 UDP checksums. The 6man working group is in the process of advancing documents which will define conditions under which this is acceptable. The documents have been reviewed, and the LISP usage meets those conditions.

comment:4 Changed 9 years ago by luigi@…

  • Status changed from resolved to closed
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