exit: store VLAN interface addresses in NetBox

… instead of generating them from prefixes. A NetBox script can be
used to create and configure all necessary data for a new VLAN.

Instead of VLAN roles “inside" and “outside” we now create separate
VRFs for inside VLANs to match the actual exit/firewall configuration.
The “outside” VRF is for all VLANs that are directly accessible from
the internet.

group_vars/all/vars.yml

@@ -1 +1 @@
-vlans: "{{ query('netbox.netbox.nb_lookup', 'vlans', api_filter='group=new-net', raw_data=true) | selectattr('role') | sort(attribute='vid') }}"
+vlans: "{{ query('netbox.netbox.nb_lookup', 'vlans', api_filter='group=new-net', raw_data=true) | sort(attribute='vid') }}"

roles/exit/templates/frr.conf.j2

@@ -2,10 +2,8 @@
     | map(attribute='ip_addresses') | first
     | selectattr('role') | selectattr('role.value', '==', 'loopback')
     | map(attribute='address') %}
-{% set my_index = inventory_hostname.split('-')[1]|int %}
-{% set bridge = interfaces | selectattr('type') | selectattr('type.value', '==', 'bridge') | first %}
-{% set bridge_vlans = vlans | selectattr('vid', 'in', bridge.tagged_vlans | map(attribute='vid')) -%}
-{% set inside_vlans = bridge_vlans | selectattr('role.slug', '==', 'inside') -%}
+{% set inside_vrfs = interfaces | selectattr('parent') | selectattr('parent.name', '==', 'bridge')
+    | selectattr('vrf') | map(attribute='vrf') | rejectattr('name', '==', 'outside') -%}
 
 frr defaults datacenter
 log syslog informational
@@ -159,8 +157,8 @@ router bgp {{ asn.asn }} vrf inside
 {% endfor %}
 
     redistribute connected route-map loopback-inside
-{% for vlan in inside_vlans %}
-    import vrf {{ vlan.name }}
+{% for vrf in inside_vrfs %}
+    import vrf {{ vrf.name }}
 {% endfor %}
     import vrf default
     import vrf route-map inside-import
@@ -181,17 +179,17 @@ router bgp {{ asn.asn }} vrf inside
 {% endfor %}
 
     redistribute connected route-map loopback-inside
-{% for vlan in inside_vlans %}
-    import vrf {{ vlan.name }}
+{% for vrf in inside_vrfs %}
+    import vrf {{ vrf.name }}
 {% endfor %}
     import vrf default
     import vrf route-map inside-import
   exit-address-family
 
 
-{% for vlan in inside_vlans %}
-# VRF for L2 network {{ vlan.name }}. Imports gateway from inside VRF.
-router bgp {{ asn.asn }} vrf {{ vlan.name }}
+{% for vrf in inside_vrfs %}
+# VRF for L2 network {{ vrf.name }}. Imports gateway from inside VRF.
+router bgp {{ asn.asn }} vrf {{ vrf.name }}
   bgp bestpath as-path multipath-relax
 
   address-family ipv4 unicast
@@ -215,8 +213,8 @@ ipv6 prefix-list default permit ::/0
 ip prefix-list fabric permit 10.34.0.0/24 ge 32
 ipv6 prefix-list fabric permit 2001:1470:fffd:3400::/64 ge 128
 
-{% for vlan in inside_vlans %}
-{% set prefixes = query('netbox.netbox.nb_lookup', 'prefixes', api_filter='vlan_id='~vlan.id, raw_data=true)
+{% for vrf in inside_vrfs %}
+{% set prefixes = query('netbox.netbox.nb_lookup', 'prefixes', api_filter='vrf_id='~vrf.id, raw_data=true)
         | sort(attribute='family.value') %}
 {% for prefix in prefixes %}
 {% if prefix.family.value == 4 %}

roles/exit/templates/isc-dhcp-relay.j2

@@ -1,4 +1,3 @@
-{% set bridge = interfaces | selectattr('type') | selectattr('type.value', '==', 'bridge') | first %}
 {% set dhcp_networks = query('netbox.netbox.nb_lookup', 'prefixes', api_filter='role=dhcp-pool', raw_data=true)
     | selectattr('vlan') | map(attribute='vlan.vid') | sort -%}
 
@@ -10,7 +9,9 @@ SERVERS="{{ dhcp }}"
 # This variable requires a -i for each interface configured above.
 # This will be used in the actual dhcrelay command
 # For example, "-i eth0 -i eth1"
-INTF_CMD="{{ bridge.tagged_vlans | map(attribute='vid') | intersect(dhcp_networks) | sort | map('regex_replace', '^', '-id bridge.') | join(' ') }} -iu {{ iface_uplink }} -iu peerlink.4"
+INTF_CMD="{{ interfaces | selectattr('parent') | selectattr('parent.name', '==', 'bridge')
+    | selectattr('untagged_vlan') | selectattr('untagged_vlan.vid', 'in', dhcp_networks)
+    | map(attribute='name') | sort | map('regex_replace', '^', '-id ') | join(' ') }} -iu {{ iface_uplink }} -iu peerlink.4"
 
 # Additional options that are passed to the DHCP relay daemon?
 OPTIONS="-U outside"

roles/exit/templates/networks.intf.j2

@@ -1,35 +1,11 @@
-{# Note that there must be exactly one VLAN-aware bridge. #}
-{% set bridge = interfaces | selectattr('type') | selectattr('type.value', '==', 'bridge') | first %}
-{% set bridge_vlans = vlans | selectattr('vid', 'in', bridge.tagged_vlans | map(attribute='vid')) -%}
+{# VRF outside is special, all others are inside but also firewalled from each other. #}
+{% set inside_vrfs = interfaces | selectattr('parent') | selectattr('parent.name', '==', 'bridge')
+    | selectattr('vrf') | map(attribute='vrf') | rejectattr('name', '==', 'outside') -%}
 
 # A separate VRF for each inside network so we can firewall between them.
-{% for vlan in bridge_vlans | selectattr('role.slug', '==', 'inside') %}
-auto {{ vlan.name }}
-iface {{ vlan.name }}
+{% for vrf in inside_vrfs %}
+auto {{ vrf.name }}
+iface {{ vrf.name }}
     vrf-table auto
 
 {% endfor %}
-
-# Interfaces.
-{% for vlan in bridge_vlans %}
-{% set prefixes = query('netbox.netbox.nb_lookup', 'prefixes', api_filter='vlan_id='~vlan.id, raw_data=true)
-        | sort(attribute='family.value') | map(attribute='prefix') %}
-auto {{ bridge.name }}.{{ vlan.vid }}
-iface {{ bridge.name }}.{{ vlan.vid }}
-    vrf {% if vlan.role.slug == 'outside' %}outside{% else %}{{ vlan.name }}{% endif +%}
-    mtu 9216
-{% if peer is defined %}
-{% set my_index = inventory_hostname.split('-')[1]|int %}
-{% for prefix in prefixes %}
-    address {{ prefix | ipaddr(1 + my_index) }}
-{% endfor %}
-{% if prefixes %}
-    address-virtual 00:00:5e:00:01:01 {{ prefixes | ipaddr(1) | join(' ') }}
-{% endif %}
-{% else %}
-{% for prefix in prefixes %}
-    address {{ prefix }}
-{% endfor %}
-{% endif %}
-
-{% endfor %}

roles/exit/templates/radvd.conf.j2

@@ -1,6 +1,5 @@
-{# Note that there must be exactly one VLAN-aware bridge. #}
-{% set bridge = interfaces | selectattr('type') | selectattr('type.value', '==', 'bridge') | first %}
-{% set my_vlans = bridge.tagged_vlans | sort(attribute='vid') -%}
+{% set my_vlans = interfaces | selectattr('parent') | selectattr('parent.name', '==', 'bridge')
+    | selectattr('untagged_vlan') | map(attribute='untagged_vlan') -%}
 
 # Send IPv6 RAs from virtual router IP for each network. Also set DNS options.
 # Both exits announce the same gateway, so don’t revoke it if we go down.

roles/fabric/templates/switch.intf.j2

@@ -37,8 +37,13 @@ iface {{ iface.name }}
 {% endif %}
 
 {#- Addresses. #}
-{% for addr in iface.ip_addresses %}
+{% for addr in iface.ip_addresses | rejectattr('role') %}
     address {{ addr.address }}
 {% endfor %}
+{% set anycast = iface.ip_addresses | selectattr('role') | selectattr('role.value', '==', 'anycast')
+        | map(attribute='address') %}
+{% if anycast %}
+    address-virtual 00:00:5e:00:01:01 {{ anycast | ipaddr(1) | join(' ') }}
+{% endif %}
 
 {% endfor %}

roles/firewall/templates/frr.conf.j2

@@ -82,13 +82,15 @@ ipv6 prefix-list default permit ::/0
 
 ip prefix-list fabric permit 10.34.0.0/24 ge 32
 
-{% for vlan in vlans | selectattr('role.slug', '==', 'inside') %}
+{% for vlan in vlans %}
 {% for prefix in query('netbox.netbox.nb_lookup', 'prefixes', api_filter='vlan_id='~vlan.id, raw_data=true) %}
+{% if prefix.vrf and prefix.vrf.name != 'outside' %}
 {% if prefix.family.value == 4 %}
 ip prefix-list office permit {{ prefix.prefix }} ge 24
 {% elif prefix.family.value == 6 %}
 ipv6 prefix-list office permit {{ prefix.prefix }} ge 64
 {% endif %}
+{% endif %}
 {% endfor %}
 {% endfor %}