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From: Rusty Russell <rusty@rustcorp.com.au>
To: Jannes Faber <jannes.faber@gmail.com>,
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Subject: Re: [bitcoin-dev] Segregated Witness features wish list
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Jannes Faber via bitcoin-dev <bitcoin-dev@lists.linuxfoundation.org> writes:
> Segregated IBLT
>
> I was just wondering if it would make sense when we have SW to also make
> Segregated IBLT? Segregating transactions from signatures and then tune the
> parameters such that transactions have a slightly higher guarantee and save
> a bit of space on the signatures side.

It just falls out naturally.  If the peer doesn't want the witnesses,
they don't get serialized into the IBLT.

Cheers,
Rusty.