/usr/share/doc/python3-certbot-dns-rfc2136/html/_static/fonts/fontawesome-webfont.eot is in python-certbot-dns-rfc2136-doc 0.23.0-1.
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It is a symlink to /usr/share/doc/python3-certbot-dns-rfc2136/html/_static/fonts/../../../../../sphinx_rtd_theme/static/fonts/fontawesome-webfont.eot