Add srlinux rfc8950 support

netsim/ansible/templates/bgp/srlinux.macro.j2

@@ -150,16 +150,16 @@
    - as-number: {{ n.local_as }}
      prepend-global-as: {{ not n.replace_global_as|default(True) }} # Don't include iBGP AS in eBGP advertisements
 {% endif %}
-{% if ('ipv4' in n.activate|default([]) and n.activate[ 'ipv4' ]) or ('ipv6' in n.activate|default([]) and not n.activate[ 'ipv6' ]) %}
+{% if n.ipv4_rfc8950|default(False) %}
    ipv4-unicast:
      advertise-ipv6-next-hops: true
      receive-ipv6-next-hops: true
-{% endif %}
 
 - path: network-instance[name={{vrf}}]/ip-forwarding
   val:
    receive-ipv4-check: false
    _annotate_receive-ipv4-check: "Allow IPv4 on IPv6 unnumbered interfaces"
+{% endif %}
 
 {% for i in interfaces|default([]) if i.ifindex == n.ifindex %}
 {% set if_name_index = i.ifname.split('.') %}

netsim/ansible/templates/initial/srlinux.j2

@@ -1,5 +1,5 @@
 {% macro ip_addresses(intf,ipv6_ra,is_system) %}
-{% if 'ipv4' in intf %}
+{% if 'ipv4' in intf and intf.ipv4 is string %}
     ipv4:
      address:
      - ip-prefix: "{{ intf.ipv4 }}"

netsim/topology-defaults.yml

@@ -696,7 +696,7 @@ devices:
       initial:
         system_mtu: True
         ipv4:
-          unnumbered: False
+          unnumbered: True
         ipv6:
           lla: True
       vlan:
@@ -709,6 +709,8 @@ devices:
         vrf_local_as: True
         local_as_ibgp: True
         activate_af: True
+        ipv6_lla: True
+        rfc8950: True
       vxlan:
         requires: [ evpn, vrf ]
       ospf: