[lwip-devel] [bug #58473] Trailing dot in hostname results in extraneous label (and corrupt packet)

[Mate Varga]

Follow-up Comment #2, bug #58473 (project lwip):

Yes, there needs to be a zero-marker, that's fine. But the current code adds
_two_ zero-markers if the name ends with a dot.

> Why do you add an extra dot?

This is part of the specification.

https://tools.ietf.org/html/rfc1034

"Since a complete domain name ends with the root label, this leads to a
printed form which ends in a dot."


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