This brought to mind the OpenBSD 3.5 release song https://www.openbsd.org/lyrics.html#35

  VRRP, philosophically,
  must ipso facto standard be
  But standard it
  needs to be free
  vis-à-vis
  the IETF
  you see?
  
  But can VRRP
  be said to be
  or not to be
  a standard, see,
  when VRRP can not be free,
  due to some Cisco patentry..