OpenBSD 6

Install required packages

Configure PKG_PATH

export PKG_PATH=$(uname -r)/packages/$(machine -a)/

Add packages:

pkg_add git autoconf-2.69p2 automake-1.15.1 libtool bison
pkg_add gmake json-c py-test py-sphinx libexecinfo

Select Python2.7 as default (required for pytest)

ln -s /usr/local/bin/python2.7 /usr/local/bin/python

FRR depends on the relatively new libyang library to provide YANG/NETCONF support. Unfortunately, most distributions do not yet offer a libyang package from their repositories. Therefore we offer two options to install this library.

Option 1: Binary Install

The FRR project builds some binary libyang packages.

RPM packages are at our RPM repository.

DEB packages are available as CI artifacts here.


libyang version 1.0.184 or newer is required to build FRR.


The libyang development packages need to be installed in addition to the libyang core package in order to build FRR successfully. Make sure to download and install those from the link above alongside the binary packages.

Depending on your platform, you may also need to install the PCRE development package. Typically this is libpcre-dev or pcre-devel.


For Debian-based systems, the official libyang package requires recent versions of swig (3.0.12) and debhelper (11) which are only available in Debian buster (10). However, libyang packages built on Debian buster can be installed on both Debian jessie (8) and Debian stretch (9), as well as various Ubuntu systems. The python3-yang package will not work, but the other packages (libyang-dev is the one needed for FRR) will.

Option 2: Source Install


Ensure that the libyang build requirements are met before continuing. Usually this entails installing cmake and libpcre-dev or pcre-devel.

git clone
cd libyang
mkdir build; cd build
      -D CMAKE_BUILD_TYPE:String="Release" ..
sudo make install

Get FRR, compile it and install it (from Git)

This assumes you want to build and install FRR from source and not using any packages

Add frr group and user

groupadd -g 525 _frr
groupadd -g 526 _frrvty
useradd -g 525 -u 525 -c "FRR suite" -G _frrvty \
    -d /nonexistent -s /sbin/nologin _frr

Download Source, configure and compile it

(You may prefer different options on configure statement. These are just an example)

git clone frr
cd frr
export AUTOCONF_VERSION="2.69"
export AUTOMAKE_VERSION="1.15"
export LDFLAGS="-L/usr/local/lib"
export CPPFLAGS="-I/usr/local/include"
./configure \
    --sysconfdir=/etc/frr \
    --localstatedir=/var/frr \
    --enable-multipath=64 \
    --enable-user=_frr \
    --enable-group=_frr \
    --enable-vty-group=_frrvty \
    --enable-configfile-mask=0640 \
    --enable-logfile-mask=0640 \
    --enable-fpm \
    --with-pkg-git-version \
gmake check
doas gmake install

Create empty FRR configuration files

doas mkdir /var/frr
doas chown _frr:_frr /var/frr
doas chmod 755 /var/frr
doas mkdir /etc/frr
doas touch /etc/frr/zebra.conf
doas touch /etc/frr/bgpd.conf
doas touch /etc/frr/ospfd.conf
doas touch /etc/frr/ospf6d.conf
doas touch /etc/frr/isisd.conf
doas touch /etc/frr/ripd.conf
doas touch /etc/frr/ripngd.conf
doas touch /etc/frr/pimd.conf
doas touch /etc/frr/ldpd.conf
doas touch /etc/frr/nhrpd.conf
doas chown -R _frr:_frr /etc/frr
doas touch /etc/frr/vtysh.conf
doas chown -R _frr:_frrvty /etc/frr/vtysh.conf
doas chmod 750 /etc/frr
doas chmod 640 /etc/frr/*.conf

Enable IP & IPv6 forwarding

Add the following lines to the end of /etc/rc.conf:

net.inet6.ip6.forwarding=1      # 1=Permit forwarding of IPv6 packets
net.inet6.ip6.mforwarding=1     # 1=Permit forwarding of IPv6 multicast packets
net.inet6.ip6.multipath=1       # 1=Enable IPv6 multipath routing

Reboot to apply the config to the system

Enable MPLS Forwarding

To enable MPLS forwarding on a given interface, use the following command:

doas ifconfig em0 mpls

Alternatively, to make MPLS forwarding persistent across reboots, add the “mpls” keyword in the hostname.* files of the desired interfaces. Example:

cat /etc/hostname.em0
inet mpls

Install rc.d init files

(create them in /etc/rc.d - no example are included at this time with FRR source)

Example (for zebra - store as /etc/rc.d/

# $OpenBSD: frr_zebra.rc,v 1.1 2013/04/18 20:29:08 sthen Exp $

daemon="/usr/local/sbin/zebra -d"

. /etc/rc.d/rc.subr

rc_cmd $1

Enable FRR processes

(Enable the required processes only)

echo "frr_zebra=YES" >> /etc/rc.conf
echo "frr_bgpd=YES" >> /etc/rc.conf
echo "frr_ospfd=YES" >> /etc/rc.conf
echo "frr_ospf6d=YES" >> /etc/rc.conf
echo "frr_isisd=YES" >> /etc/rc.conf
echo "frr_ripngd=YES" >> /etc/rc.conf
echo "frr_ripd=YES" >> /etc/rc.conf
echo "frr_pimd=YES" >> /etc/rc.conf
echo "frr_ldpd=YES" >> /etc/rc.conf