.. _`accel-ppp`: https://accel-ppp.org/
.. _`Secure Socket Tunneling Protocol`: https://en.wikipedia.org/wiki/Secure_Socket_Tunneling_Protocol
.. _Phabricator: https://phabricator.vyos.net/

.. _802.1ad: https://en.wikipedia.org/wiki/IEEE_802.1ad
.. _802.1q: https://en.wikipedia.org/wiki/IEEE_802.1Q