sonic-buildimage/dockers/docker-fpm-gobgp/zebra.conf.j2

!
{% block banner %}
! =========== Managed by sonic-cfggen DO NOT edit manually! ====================
! generated by templates/quagga/zebra.conf.j2 using config DB data
! file: zebra.conf
!
{% endblock banner %}
!
{% block sys_init %}
hostname {{ DEVICE_METADATA['localhost']['hostname'] }}
password zebra
enable password zebra
{% endblock sys_init %}
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{% block interfaces %}
! Enable link-detect (default disabled)
{% for (name, prefix) in INTERFACE|pfx_filter %}
interface {{ name }}
link-detect
!
{% endfor %}
{% for pc in PORTCHANNEL %}
interface {{ pc }}
link-detect
!
{% endfor %}
{% endblock interfaces %}
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{% block default_route %}
! set static default route to mgmt gateway as a backup to learned default
{% for (name, prefix) in MGMT_INTERFACE|pfx_filter %}
{% if prefix | ipv4 %}
ip route 0.0.0.0/0 {{ MGMT_INTERFACE[(name, prefix)]['gwaddr'] }} 200
{% endif %}
{% endfor %}
{% endblock default_route %}
!
{% block source_loopback %}
{% set lo_ipv4_addrs = [] %}
{% set lo_ipv6_addrs = [] %}
{% if LOOPBACK_INTERFACE %}
{%   for (name, prefix) in LOOPBACK_INTERFACE|pfx_filter %}
{%     if prefix | ipv6 %}
{%       if lo_ipv6_addrs.append(prefix) %}
{%       endif %}
{%     else %}
{%       if lo_ipv4_addrs.append(prefix) %}
{%       endif %}
{%     endif %}
{%   endfor %}
{% endif %}
! Set ip source to loopback for bgp learned routes
route-map RM_SET_SRC permit 10
    set src {{ lo_ipv4_addrs[0] | ip }}
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{% if lo_ipv6_addrs|length > 0 %} 
route-map RM_SET_SRC6 permit 10
    set src {{ lo_ipv6_addrs[0] | ip }}
!
{% endif %}
ip protocol bgp route-map RM_SET_SRC
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{% if lo_ipv6_addrs|length > 0 %}
ipv6 protocol bgp route-map RM_SET_SRC6
!
{% endif %}
{% endblock source_loopback %}
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{% block logging %}
log syslog informational
log facility local4
{% endblock logging %}
!