diff --git a/roles/radvd/molecule/default/converge.yml b/roles/radvd/molecule/default/converge.yml
index b06d14bd8a..edcbd5ceff 100644
--- a/roles/radvd/molecule/default/converge.yml
+++ b/roles/radvd/molecule/default/converge.yml
@@ -108,6 +108,21 @@
           - "'AdvAutonomous on' in _config"
           - "'AdvRouterAddr on' in _config"
 
+    - name: Verify testnet1 configuration formatting is correct
+      vars:
+        _config_lines: "{{ (_testnet1_conf.content | b64decode).split('\n') }}"
+      ansible.builtin.assert:
+        that:
+          # Check directives are on separate lines (not squished together)
+          - _config_lines | select('match', '.*;.*AdvManagedFlag') | list | length == 0
+          - _config_lines | select('match', '.*;.*AdvOtherConfigFlag') | list | length == 0
+          - _config_lines | select('match', '.*;.*AdvLinkMTU') | list | length == 0
+          # Check specific lines have proper formatting (one directive per line)
+          - _config_lines | select('match', '^        AdvManagedFlag on;$') | list | length == 1
+          - _config_lines | select('match', '^        AdvOtherConfigFlag on;$') | list | length == 1
+          - _config_lines | select('match', '^        AdvLinkMTU 1500;$') | list | length == 1
+        msg: "Configuration formatting is incorrect - directives may be squished together on the same line"
+
     - name: Verify testnet2 configuration has RDNSS
       become: true
       ansible.builtin.slurp:
diff --git a/roles/radvd/templates/network.conf.j2 b/roles/radvd/templates/network.conf.j2
index d24aea65aa..e258e93be9 100644
--- a/roles/radvd/templates/network.conf.j2
+++ b/roles/radvd/templates/network.conf.j2
@@ -4,60 +4,60 @@
 interface {{ cifmw_radvd_network.name }}
 {
         AdvSendAdvert {{ (cifmw_radvd_network.adv_send_advert | default(true)) | ternary('on', 'off') }};
-{%- if cifmw_radvd_network.adv_managed_flag is defined %}
+{% if cifmw_radvd_network.adv_managed_flag is defined %}
         AdvManagedFlag {{ cifmw_radvd_network.adv_managed_flag | ternary('on', 'off') }};
-{%- endif %}
-{%- if cifmw_radvd_network.adv_other_config_flag is defined %}
+{% endif %}
+{% if cifmw_radvd_network.adv_other_config_flag is defined %}
         AdvOtherConfigFlag {{ cifmw_radvd_network.adv_other_config_flag | ternary('on', 'off') }};
-{%- endif %}
-{%- if cifmw_radvd_network.adv_ra_solicited_unicast is defined %}
+{% endif %}
+{% if cifmw_radvd_network.adv_ra_solicited_unicast is defined %}
         AdvRASolicitedUnicast {{ cifmw_radvd_network.adv_ra_solicited_unicast | ternary('on', 'off') }};
-{%- endif %}
-{%- if cifmw_radvd_network.adv_link_mtu is defined %}
+{% endif %}
+{% if cifmw_radvd_network.adv_link_mtu is defined %}
         AdvLinkMTU {{ cifmw_radvd_network.adv_link_mtu }};
-{%- endif %}
-{%- if cifmw_radvd_network.min_rtr_adv_interval is defined %}
+{% endif %}
+{% if cifmw_radvd_network.min_rtr_adv_interval is defined %}
         MinRtrAdvInterval {{ cifmw_radvd_network.min_rtr_adv_interval }};
-{%- endif %}
-{%- if cifmw_radvd_network.max_rtr_adv_interval is defined %}
+{% endif %}
+{% if cifmw_radvd_network.max_rtr_adv_interval is defined %}
         MaxRtrAdvInterval {{ cifmw_radvd_network.max_rtr_adv_interval }};
-{%- endif %}
-{%- for prefix in cifmw_radvd_network.prefixes | default([]) %}
+{% endif %}
+{% for prefix in cifmw_radvd_network.prefixes | default([]) %}
         prefix {{ prefix.network }}
         {
                 AdvOnLink {{ (prefix.adv_on_link | default(true)) | ternary('on', 'off') }};
                 AdvAutonomous {{ (prefix.adv_autonomous | default(true)) | ternary('on', 'off') }};
-{%- if prefix.adv_router_addr is defined %}
+{% if prefix.adv_router_addr is defined %}
                 AdvRouterAddr {{ prefix.adv_router_addr | ternary('on', 'off') }};
-{%- endif %}
-{%- if prefix.adv_valid_lifetime is defined %}
+{% endif %}
+{% if prefix.adv_valid_lifetime is defined %}
                 AdvValidLifetime {{ prefix.adv_valid_lifetime }};
-{%- endif %}
-{%- if prefix.adv_preferred_lifetime is defined %}
+{% endif %}
+{% if prefix.adv_preferred_lifetime is defined %}
                 AdvPreferredLifetime {{ prefix.adv_preferred_lifetime }};
-{%- endif %}
+{% endif %}
         };
 
-{%- endfor %}
-{%- for route in cifmw_radvd_network.routes | default([]) %}
+{% endfor %}
+{% for route in cifmw_radvd_network.routes | default([]) %}
         route {{ route.network }}
         {
-{%- if route.adv_route_preference is defined %}
+{% if route.adv_route_preference is defined %}
                 AdvRoutePreference {{ route.adv_route_preference }};
-{%- endif %}
-{%- if route.adv_route_lifetime is defined %}
+{% endif %}
+{% if route.adv_route_lifetime is defined %}
                 AdvRouteLifetime {{ route.adv_route_lifetime }};
-{%- endif %}
+{% endif %}
         };
 
-{%- endfor %}
-{%- for rdnss in cifmw_radvd_network.rdnss | default([]) %}
+{% endfor %}
+{% for rdnss in cifmw_radvd_network.rdnss | default([]) %}
         RDNSS {{ rdnss.servers | join(' ') }}
         {
-{%- if rdnss.adv_rdnss_lifetime is defined %}
+{% if rdnss.adv_rdnss_lifetime is defined %}
                 AdvRDNSSLifetime {{ rdnss.adv_rdnss_lifetime }};
-{%- endif %}
+{% endif %}
         };
 
-{%- endfor %}
+{% endfor %}
 };