Re: [PATCH net-next] ipv6: mld: answer mldv2 queries with mldv1 reports in mldv1 fallback

On Sat, Sep 20, 2014, at 14:03, Daniel Borkmann wrote:

Since the mapping of MRC to MRD in exactly such cases can make use of
the exponential algorithm from 5.1.3, we cannot [strictly speaking] be
aware in MLDv1 of the encoding in MRC, it seems also not mentioned by
the RFC. Since encodings are the same up to 32767, assume in such a
situation this value as a hard upper limit we would clamp. We have asked
one of the RFC authors on that regard, and he mentioned that there seem
not to be any implementations that make use of that exponential algorithm
on startup messages. In any case, this patch fixes this MLD
interoperability issue.

Signed-off-by: Daniel Borkmann <redacted>

Acked-by: Hannes Frederic Sowa <redacted>