Required extensions to build: 
  compiletc
  readline 
  readline-dev 
  perl5 
  json-c-dev
  python3.6-dev
  c-ares-dev
  ipv6-KERNEL.tcz
  autoconf
  automake 
  libtool
  libtool-dev

Notes: 
  libtoolize --force
  aclocal
  autoheader
  automake --force-missing --add-missing
  autoconf
  https://github.com/FRRouting/frr/archive/frr-3.0.2.zip

Additional configure options: 
  * --prefix=/usr/local
  * --enable-vtysh 
  * --enable-pimd   
  * --enable-multipath=18   
  * --sysconfdir=/usr/local/etc/frr   
  * --localstatedir=/usr/local/var/frr
  * --enable-rtadv
  * --enable-user=tc 
  * --enable-group=staff     
  * --enable-vty-group=staff
  * --disable-docf 
  * --disable-ldpd