Add my bird role

1 files changed, 289 insertions, 0 deletions

diff --git a/roles/uvok_bird/templates/clearnet.conf.j2 b/roles/uvok_bird/templates/clearnet.conf.j2
new file mode 100644
index 0000000..9f75798
--- /dev/null
+++ b/roles/uvok_bird/templates/clearnet.conf.j2
@@ -0,0 +1,289 @@
+# {{ ansible_managed }}
+
+define CLEARNET_PREFIP = {{ uvok_bird_opts.preferred_ip }};
+
+# trs=transit
+ipv6 table t_myas_unfiltered;
+ipv6 table t_myas_trs;
+ipv6 table t_myas_babel;
+
+roa6 table clear_roa_v6;
+
+protocol rpki roa_clearnet1 {
+    roa6 { table clear_roa_v6; };
+    remote 10.2.0.1;
+    port 8282;
+    refresh 3600;
+    retry 600;
+    expire 7200;
+}
+
+protocol rpki roa_clearnet2 {
+    roa6 { table clear_roa_v6; };
+    remote 10.2.0.10;
+    port 8282;
+    refresh 3600;
+    retry 600;
+    expire 7200;
+}
+
+define BOGON_ASNS = [
+  0,                      # RFC 7607
+  23456,                  # RFC 4893 AS_TRANS
+  64496..64511,           # RFC 5398 and documentation/example ASNs
+  64512..65534,           # RFC 6996 Private ASNs
+  65535,                  # RFC 7300 Last 16 bit ASN
+  65536..65551,           # RFC 5398 and documentation/example ASNs
+  65552..131071,          # RFC IANA reserved ASNs
+  4200000000..4294967294, # RFC 6996 Private ASNs
+  4294967295 ];           # RFC 7300 Last 32 bit ASN
+
+define BOGON_PREFIXES = [ ::/0,                          # Default route
+                          ::/8+,                         # RFC 4291 IPv4-compatible, loopback, et al
+                          0100::/64+,                    # RFC 6666 Discard-Only
+                          2001:2::/48+,                  # RFC 5180 BMWG
+                          2001:10::/28+,                 # RFC 4843 ORCHID
+                          2001:db8::/32+,                # RFC 3849 documentation
+                          2002::/16+,                    # RFC 7526 6to4 anycast relay
+                          3ffe::/16+,                    # RFC 3701 old 6bone
+                          fc00::/7+,                     # RFC 4193 unique local unicast
+                          fe80::/10+,                    # RFC 4291 link local unicast
+                          fec0::/10+,                    # RFC 3879 old site local unicast
+                          ff00::/8+                      # RFC 4291 multicast
+ ];
+
+function reject_bogon_asns()
+int set bogon_asns;
+{
+  bogon_asns = BOGON_ASNS;
+
+  if ( bgp_path ~ bogon_asns ) then {
+    print "Reject: bogon AS_PATH: ", net, " ", bgp_path;
+    clearnet_add_filter(FILTER_BOGON_ASN);
+  }
+}
+
+function reject_bogon_prefixes()
+prefix set bogon_prefixes;
+{
+    bogon_prefixes = BOGON_PREFIXES;
+    if (net ~ bogon_prefixes) then {
+        print "Reject: Bogon prefix: ", net, " ", bgp_path;
+        clearnet_add_filter(FILTER_BOGON_PREFIX);
+    }
+}
+
+define PROBLEM_PREFIXES = [
+];
+
+function reject_problem_prefixes()
+prefix set problem_prefixes;
+{
+    problem_prefixes = PROBLEM_PREFIXES;
+    if (net ~ problem_prefixes) then {
+        print "Reject: Problematic prefix: ", net, " ", bgp_path;
+        clearnet_add_filter(FILTER_PROBLEM_PREFIX);
+    }
+}
+
+function reject_long_aspaths()
+{
+    if ( bgp_path.len > 50 ) then {
+        clearnet_add_filter(FILTER_LONG_ASPATH);
+    }
+}
+
+function reject_small_prefixes()
+{
+  if (net.len > 55 && net.type = NET_IP6) then {
+    print "Reject: Too small prefix: ", net, " ", bgp_path;
+    clearnet_add_filter(FILTER_SMALL_V6_PREFIX);
+  }
+}
+
+function reject_roa_rpki()
+{
+    if ( roa_check(clear_roa_v6, net, bgp_path.last_nonaggregated) = ROA_INVALID ) then {
+        clearnet_add_filter(FILTER_ROA_RPKI);
+    }
+}
+
+function clearnet_common_import() {
+    reject_bogon_asns();
+    reject_bogon_prefixes();
+    reject_long_aspaths();
+    reject_small_prefixes();
+    reject_problem_prefixes();
+    reject_roa_rpki();
+    honor_graceful_shutdown();
+}
+
+filter myas_export
+{
+    if (proto = "myprefix") then {
+        accept;
+    }
+    reject;
+}
+
+# route collector
+filter myas_f_rc
+{
+# export IXP routes after all
+#    if ( clearnet_is_ixp() ) then reject;
+    if (source = RTS_BGP) then accept;
+    if (proto = "myprefix") then accept;
+    reject;
+};
+
+protocol static myprefix {
+{% for prefix in uvok_bird_opts.prefixes %}
+    route {{ prefix }} reject;
+{% endfor %};
+
+    ipv6 {
+        # needs to be in unfiltered - because that's where I'm exporting from
+        table t_myas_unfiltered;
+        import all;
+        export none;
+    };
+}
+
+protocol direct {
+    ipv6 { table t_myas_babel; };
+    interface "myas_int";
+};
+
+template bgp pt_clearnet {
+    local as CLEARNET_ASN;
+
+    graceful restart on;
+    long lived graceful restart on;
+
+    prefer older on;
+
+    # Neighbor as must be first route as
+    enforce first as on;
+    # faster updates
+    enable extended messages on;
+
+    # defaults anyway
+    enable route refresh on;
+    interpret communities on;
+    direct;
+
+    # higher better
+    default bgp_local_pref 100;
+
+    # my value - lower better
+    default bgp_med 100;
+
+    ipv6 {
+        # start by importing into the unfiltered table
+        table t_myas_unfiltered;
+
+        # for inspection who's evil
+        import keep filtered;
+        # for RPKI / ROA
+        import table on;
+
+        import filter {
+            clearnet_import_transit();
+            clearnet_common_import();
+            accept;
+        };
+
+        export filter myas_export;
+    };
+}
+
+# route collector
+template bgp pt_rc from pt_clearnet {
+    multihop;
+
+    # yes, use unfiltered table for export
+    # I wanna shame garbish announcers publically! ;)
+    ipv6 {
+        add paths tx;
+        import none;
+        export filter myas_f_rc;
+    };
+}
+
+{% if uvok_bird_opts.babel_if_name %}
+protocol babel p_myas_babel {
+  ipv6 {
+    table t_myas_babel;
+    import where source ~ [RTS_DEVICE, RTS_BABEL];
+    export where source ~ [RTS_DEVICE, RTS_BABEL];
+  };
+
+  interface "{{ uvok_bird_opts.babel_if_name }}" {
+  };
+}
+{% endif %}
+
+# pipe babel table => bgp table for next-hop resolution?
+protocol pipe {
+    table t_myas_babel;
+    peer table t_myas_trs;
+    import none;
+    export where source ~ [RTS_BABEL];
+}
+
+# EXPORT FROM unfilteed TO filtered trs table
+protocol pipe {
+    table t_myas_unfiltered;
+    peer table t_myas_trs;
+    import none;
+    export filter {
+        if ( bgp_large_community ~ [(CLEARNET_ASN, LC_FILTERED, *)] ) then {
+            reject;
+        }
+        accept;
+    };
+}
+
+protocol kernel p_myas_i {
+#    scan time 20;
+    kernel table 150;
+
+    ipv6 {
+        table t_myas_babel;
+        import none;
+        export filter {
+            if (source != RTS_BABEL) then {
+                print "SHOULD NOT HAPPEN: export babel to kernel: ", net, " from", source;
+                reject;
+            }
+            krt_prefsrc = CLEARNET_PREFIP;
+            accept;
+        };
+    };
+};
+
+protocol kernel pk_myas_out {
+    kernel table 100;
+
+    ipv6 {
+        table t_myas_trs;
+        import none;
+        export filter {
+            krt_prefsrc = CLEARNET_PREFIP;
+            if (source = RTS_BGP) then {
+                accept;
+            }
+{% if uvok_bird_opts.use_fallback %}
+            if (proto = "myas_def_fallb") then {
+                accept;
+            }
+{% endif %}
+            reject;
+        };
+    };
+};
+
+include "/etc/bird/clear_peers/*.conf";
+{% if uvok_bird_opts.use_fallback %}
+include "clear_fallback.conf";
+{% endif %}