ansible/roles/bird/templates/bird.conf.j2

{{ ansible_managed | comment }}

log syslog all;

router id {{ bird__router_id }};

protocol device {
    scan time 10;
}

protocol direct {
    ipv4;
    ipv6;
}

protocol kernel kernel4 {
    ipv4 {
        import all;
        export where source !~ [ RTS_DEVICE, RTS_STATIC ];
    };
}

protocol kernel kernel6 {
    ipv6 {
        import all;
        export where source !~ [ RTS_DEVICE, RTS_STATIC ];
    };
}

{% if bird__static_unreachable | ansible.utils.ipv4 %}
protocol static unreachable4 {
    ipv4 {
        import all;
    };
{% for route in bird__static_unreachable | ansible.utils.ipv4 %}
    route {{ route }} unreachable;
{% endfor %}
}
{% endif %}

{% if bird__static_unreachable | ansible.utils.ipv6 %}
protocol static unreachable6 {
    ipv6 {
        import all;
    };
{% for route in bird__static_unreachable | ansible.utils.ipv6 %}
    route {{ route }} unreachable;
{% endfor %}
}
{% endif %}

{% if bird__ospf_broadcast_interfaces %}
protocol ospf v2 ospf4 {
    ipv4 {
        import all;
        export where source ~ [ RTS_STATIC, RTS_DEVICE ];
    };
    area 0 {
{% for network in bird__ospf_stub_networks | ansible.utils.ipv4 %}
        stubnet {{ network }};
{% endfor %}
{% for name, iface in bird__ospf_broadcast_interfaces.items() %}
        interface {{ name | enquote }} {
            type broadcast;
            hello {{ iface.hello | default(bird__ospf_hello) | int }};
            retransmit {{ iface.retransmit
                          | default(bird__ospf_retransmit)
                          | int }};
            wait {{ iface.wait | default(bird__ospf_wait) | int }};
            dead {{ iface.dead | default(bird__ospf_dead) | int }};
        };
{% endfor %}
{% for name in bird__ospf_stub_interfaces %}
        interface {{ name | enquote }} {
            stub;
        };
{% endfor %}
    };

}
{% endif %}

{% if bird__ospf_broadcast_interfaces %}
protocol ospf v3 ospf6 {
    ipv6 {
        import all;
        export where source ~ [ RTS_STATIC, RTS_DEVICE ];
    };
    area 0 {
{% for network in bird__ospf_stub_networks | ansible.utils.ipv6 %}
        stubnet {{ network }};
{% endfor %}
{% for name, iface in bird__ospf_broadcast_interfaces.items() %}
        interface {{ name | enquote }} {
            type broadcast;
            hello {{ iface.hello | default(bird__ospf_hello) | int }};
            retransmit {{ iface.retransmit
                          | default(bird__ospf_retransmit)
                          | int }};
            wait {{ iface.wait | default(bird__ospf_wait) | int }};
            dead {{ iface.dead | default(bird__ospf_dead) | int }};
        };
{% endfor %}
{% for name in bird__ospf_stub_interfaces %}
        interface {{ name | enquote }} {
            stub;
        };
{% endfor %}
    };
}
{% endif %}

{% macro bird_filter(filter, last) %}
{% if filter.as_prepend is defined %}
{% for _ in range(filter.as_prepend.size) %}
bgp_path.prepend({{ filter.as_prepend.asn }});
{% endfor %}
{% endif %}
{% if filter.local_pref is defined %}
bgp_local_pref = {{ filter.local_pref }};
{% endif %}
{% if filter.accept is defined %}
{{ filter.accept | ternary("accept", "reject") }};
{% endif %}
{% endmacro %}

{# FIXME: massive cleanup required #}
{% for name, session in bird__bgp_sessions.items() %}
{% for version in [4, 6] %}
{% for direction in ["import", "export"] %}
filter bgp{{ version }}_{{ direction }}_{{ name }} {
{% for filter in session[direction] %}
{% set negate = filter.negate | default(False) %}
{% set networks =
       filter.prefix
       | default([])
       | ansible.utils.ipaddr(version=version)
       | map("suffix", filter.sub
                       | default(False)
                       | ternary("+", ""))
       | list %}
{% set bgp_protos =
       filter.bgp_proto
       | default([])
       | map("format_rev", 'proto {1} "bgp{2}_{0}"',
             negate | ternary("!=", "="), version)
       | list %}
{% if networks or bgp_protos %}
{% if networks %}
{% set op = negate | ternary("!~", "~") %}
    if net {{ op }} [ {{ networks | join(", ") }} ] then {
{% elif bgp_protos %}
{% set op = negate | ternary("&&", "||") %}
    if {{ bgp_protos | join(" " + op  + " ") }} then {
{% endif %}
        {{ bird_filter(filter) | indent(8) }}
    }
{% else %}
    {{ bird_filter(filter) | indent(4) }}
{% endif %}
{% endfor %}
}

{% endfor %}
{% endfor %}
{% endfor %}

{% for name, session in bird__bgp_sessions.items() %}
{% for local_address in session.local.address %}
{% set version =
       local_address
       | ansible.utils.ipaddr(query="version") %}
{% set remote_address =
       session.remote.address
       | ansible.utils.ipaddr(version=version)
       | first %}
protocol bgp bgp{{ version }}_{{ name }} {
    local {{ local_address }} as {{ session.local.as }};
    neighbor {{ remote_address }} as {{ session.remote.as }};
    {{ "ipv4" if version == 4 else "ipv6" }} {
{% if session.next_hop_self | default(False) %}
        next hop self;
{% endif %}
{% if session.direct | default(False) %}
        direct;
{% endif %}
        import filter bgp{{ version }}_import_{{ name }};
        export filter bgp{{ version }}_export_{{ name }};
    };
}
{% endfor %}
{% endfor %}

{% if bird__radv_interfaces %}
protocol radv {
{% for name, iface in bird__radv_interfaces.items() %}
    interface {{ name | enquote }} {
        max ra interval {{ bird__radv_max_interval | int }};
{% for prefix in iface.prefix | default([]) %}
        prefix {{ prefix | ipaddr }};
{% endfor %}
{% for domain in iface.domain_search | default([]) %}
        dnssl {{ domain | enquote }};
{% endfor %}
    };
{% endfor %}
{% for address in bird__radv_dns_servers %}
    rdnss {{ address | ipaddr }};
{% endfor %}
}
{% endif %}