[lwip-devel] [bug #35015] Lost segments over wireless access point

[Simon Goldschmidt]

Follow-up Comment #1, bug #35015 (project lwip):

The pcap looks indeed strange: between packets #104 and #106, 519 bytes are
missing. However, that's no loss on the wire since packet #104 has the IP-ID
60 and #106 has 61, so lwIP did not send the missing bytes in the first
place.

What's even more strange is that when the missing packet is re-sent (packet
#112 starting at seqno #18073), it contains 485 bytes of data, not 519.

The first error seems to imply a bug in your lwIP port as this normally works.
Can you say for sure that you don't have more than one thread (or ISR and
non-ISR level) running in lwIP code at the same time? If you can rule out
this, please try to reproduce this with TCP logging enabled so we can try to
reproduce it in a test environment.

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