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

[Mate Varga]

Follow-up Comment #3, bug #58473 (project lwip):

And yes, my original comment was incorrect. It should have been like (see the
extra zero-markers):

For example, an A query for foo.barbaz. should result in an UDP packet
fragment like
3foo6barbaz00101
(3 char long label: foo, 6 char long label: barbaz, type: 1, class 1)
Actual behavior
---------------
LWIP considers the trailing dot as a separate label with zero length.
Therefore the above example will result in the following packet fragment:
3foo6barbaz000101

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