lwIP - A Lightweight TCP/IP stack - Bugs: bug #56013, The ICMPv6 err message must take...
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bug #56013: The ICMPv6 err message must take as much of the offending packet as possible
Submitter: | Gao Qingshui <kevingao> | ||
Submitted: | Thu 28 Mar 2019 03:03:25 AM UTC | ||
Category: | IPv6 | Severity: | 3 - Normal |
Item Group: | Faulty Behaviour | Status: | Fixed |
Privacy: | Public | Assigned to: | goldsimon |
Open/Closed: | Closed | Planned Release: | None |
lwIP version: | git head |
Wed 05 Feb 2020 07:44:26 PM UTC, comment #1: |
Simon Goldschmidt <goldsimon> |
Thu 28 Mar 2019 03:03:25 AM UTC, original submission:
As per RFC4443 section 2.4, Every ICMPv6 error message (type < 128) MUST include as much of the IPv6 offending (invoking) packet (the packet that caused the error) as possible without making the error message packet exceed the minimum IPv6 MTU, but currently lwip only take the first 48 bytes. In many cases, this way cannot bring enough err info to make the packet originator make sense of what specific error happened. so lwip must obey this rule as it was defined as "MUST".
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Gao Qingshui <kevingao> |
Depends on the following items: None found
Items that depend on this one: None found
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Follow 4 latest changes.
Date | Changed by | Updated Field | Previous Value | => | Replaced by |
---|---|---|---|---|---|
2020-02-05 | goldsimon | Status | None | Fixed | |
Assigned to | None | goldsimon | |||
Open/Closed | Open | Closed | |||
2019-03-28 | kevingao | Attached File | - | Added icmpv6-err-message-take-as-much-of-the-offending-packet-as-possible.patch, #46651 |
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Corresponding source code
Fixed, but slightly different to your patch.