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[quicwg/base-drafts] Endpoints MAY (not SHOULD) ignore IPv4 ICMP PTB messages (#2109)

Igor Lubashev <notifications@github.com> Mon, 10 December 2018 04:31 UTC

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From: Igor Lubashev <notifications@github.com>
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Subject: [quicwg/base-drafts] Endpoints MAY (not SHOULD) ignore IPv4 ICMP PTB messages (#2109)
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The majority of IPv4 ICMP messages still include only 8 bytes past the original IP header.  We should not recommend implementations to ignore them.  Even though these ICMP messages could be spoofed, we already require ignoring ICMP messages that try to reduce PMTU to a value smaller than 1280.  So the damage from spoofed ICMP messages is minimal, while ignoring them may cause problems from slow PMTU discovery to broken connections.
You can view, comment on, or merge this pull request online at:

  https://github.com/quicwg/base-drafts/pull/2109

-- Commit Summary --

  * Endpoints MAY (not SHOULD) ignore IPv4 ICMP PTB messages

-- File Changes --

    M draft-ietf-quic-transport.md (6)

-- Patch Links --

https://github.com/quicwg/base-drafts/pull/2109.patch
https://github.com/quicwg/base-drafts/pull/2109.diff

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