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Building FRR on OpenBSD 6 from Git Source
=========================================

OpenBSD restrictions:
---------------------

- MPLS is not tested on `OpenBSD`. It may work as it shares the
  sources with the LDPd on OpenBSD. Bug reports and fixes are welcome

Install required packages
-------------------------

Configure PKG_PATH

    export PKG_PATH=http://ftp5.usa.openbsd.org/pub/OpenBSD/$(uname -r)/packages/$(machine -a)/

Add packages:

    pkg_add git autoconf-2.69p2 automake-1.15p0 libtool
    pkg_add gmake gawk dejagnu openssl json-c p5-XML-LibXML py-test

Select Python2.7 as default (required for pytest)

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

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 https://github.com/freerangerouting/frr.git frr
    cd frr
    git checkout stable/2.0
    ./bootstrap.sh
    export LDFLAGS="-L/usr/local/lib"
    export CPPFLAGS="-I/usr/local/include"
    ./configure \
        --sysconfdir=/etc/frr \
        --localstatedir=/var/frr \
        --enable-pimd \
        --enable-ospfclient=yes \
        --enable-ospfapi=yes \
        --enable-multipath=64 \
        --enable-user=_frr \
        --enable-group=_frr \
        --enable-vty-group=_frrvty \
        --enable-configfile-mask=0640 \
        --enable-logfile-mask=0640 \
        --enable-rtadv \
        --enable-tcp-zebra \
        --enable-fpm \
        --enable-ldpd \
        --with-pkg-git-version \
        --with-pkg-extra-version=-MyOwnFRRVersion   
    gmake
    gmake check
    sudo gmake install

### Create empty FRR configuration files

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

### 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/frr_zebra.sh`)

    #!/bin/sh
    #
    # $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