WKD for GitHub pages

[Stefan Claas]

On Sat, Jan 9, 2021 at 7:27 PM Ingo Klöcker <kloecker at kde.org> wrote:
>
> On Samstag, 9. Januar 2021 15:43:14 CET Stefan Claas via Gnupg-users wrote:

> > Example: If I would be the host master of the domain bund.de with it's
> > many subdomains and authorities would request that WKD, as an
> > inexpensive inhouse option, has to be set-up...
> >
> > IMHO that would be the same case, if I am not mistaken.
>
> No, it's not.
>
> Even if there's foo.bund.de, then there wouldn't be openpgpkey.foo.bund.de
> (unless foo.bund.de sets up the advanced variant of WKD).
>
> The problem with GitHub pages is apparently that openpgpkey.sac001.github.io
> resolves to an IP address (well, actually multiple addresses):
>
> $ host openpgpkey.sac001.github.io
> openpgpkey.sac001.github.io has address 185.199.109.153
> openpgpkey.sac001.github.io has address 185.199.108.153
> openpgpkey.sac001.github.io has address 185.199.110.153
> openpgpkey.sac001.github.io has address 185.199.111.153

host sac001.github.io
sac001.github.io has address 185.199.111.153
sac001.github.io has address 185.199.109.153
sac001.github.io has address 185.199.110.153
sac001.github.io has address 185.199.108.153

works as well and why can sequoia-pgp handle this and not GnuPG,
or gpg4win? Couldn't they not fall back then as well to the direct method?

Regards
Stefan