Just if anyone is questioning this:
OPNsense is not affected as CVE-2017-8301 affects 2.5.1 to 2.5.3 and OPNsense uses a 2.4.x version of LibreSSL.
http://seclists.org/oss-sec/2017/q2/145
Please be careful with your other servers out there.
Kind regards
Fabian
Strongswan and HAProxy currently fall apart with LibreSSL 2.5. We'll say with 2.4 a while longer, it's still fully supported and will receive updates if necessary.
Cheers,
Franco