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Upstream commit to backport:

commit 09a3b2ba0c8228d1c6bf0f030cae97addb397351
Author: Florian Westphal <fw>
Date:   Tue Oct 6 23:16:32 2020 +0200

    proto: add sctp crc32 checksum fixup
    
    Stateless SCTP header mangling doesn't work reliably.
    This tells the kernel to update the checksum field using
    the sctp crc32 algorithm.
    
    Note that this needs additional kernel support to work.
    
    Signed-off-by: Florian Westphal <fw>

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (nftables bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHEA-2021:1722