ansible-ffibk/roles/service-bird-ffrl/templates/ffrl_ipv4.conf.j2

#
# {{ ansible_managed }}
#

# Variables
define ffrl_as = {{ as_public_ffrl }};
define ffrl_nat_address = {{ ffrl_public_ipv4_nat | ipaddr('address') }};

# Routing Table
table ffrl;

# Functions
function is_ffrl_nat() {
    return net ~ [
        {{ ffrl_public_ipv4_nat | ipaddr('host') }}
    ];
}

function is_ffrl_tunnel_nets() {
    return net ~ [
{% for peer_id, peer_value in ffrl_exit_server.iteritems() %}
        {{ peer_value.tunnel_ipv4_network }}{{ "," if not loop.last else "" }}
{% endfor %}
    ];
}

# Filters
filter ebgp_ffrl_import_filter {
    if is_default() then accept;
    reject;
}

filter ebgp_ffrl_export_filter {
    if is_ffrl_nat() then accept;
    reject;
}

# Protocols
protocol direct ffrl_nat {
    table ffrl;
    interface "ffrl-nat";
    import where is_ffrl_nat();
}

protocol direct ffrl_tunnels {
    table ffrl;
    interface "ffrl-*";
    import where is_ffrl_tunnel_nets();
}

protocol kernel kernel_ffrl {
    scan time 30;
    import none;
    export filter {
        krt_prefsrc = ffrl_nat_address;
        accept;
    };
    table ffrl;
    kernel table ipt_internet;
};

# Templates
template bgp ffrl_uplink {
    table ffrl;
    local as mwu_as;
    import keep filtered;
    import filter ebgp_ffrl_import_filter;
    export filter ebgp_ffrl_export_filter;
    next hop self;
    direct;
};

# Include FFRL IPv4 peers
include "ffrl_ipv4_peers.con?";