sonic-buildimage/dockers/docker-fpm-frr/frr/staticd/staticd.loopback_route.conf.j2

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{% from "common/functions.conf.j2" import get_ipv4_loopback_address, get_ipv6_loopback_address, get_vnet_interfaces %}
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{% block loopback_route %}
{% if get_ipv6_loopback_address(LOOPBACK_INTERFACE, "Loopback0") != 'None' %}
{% if ( ('localhost' in DEVICE_METADATA) and ('bgp_adv_lo_prefix_as_128' in  DEVICE_METADATA['localhost']) and
        (DEVICE_METADATA['localhost']['bgp_adv_lo_prefix_as_128'] == 'true') ) %}
! add static ipv6 /128 loopback route to allow bgpd to advertise the loopback route prefix
ipv6 route {{ get_ipv6_loopback_address(LOOPBACK_INTERFACE, "Loopback0") | ip_network }}/128 Loopback0
{% else %}
! add static ipv6 /64 loopback route to allow bgpd to advertise the loopback route prefix
ipv6 route {{ get_ipv6_loopback_address(LOOPBACK_INTERFACE, "Loopback0") | replace('/128', '/64') | ip_network }}/64 Loopback0
{% endif %}
{% endif %}
{% endblock loopback_route %}
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