diff --git a/roles/setup-http-site-forward/templates/apache-docker-forward-site.j2 b/roles/setup-http-site-forward/templates/apache-docker-forward-site.j2
index 1fc1fc3..686c2ba 100644
--- a/roles/setup-http-site-forward/templates/apache-docker-forward-site.j2
+++ b/roles/setup-http-site-forward/templates/apache-docker-forward-site.j2
@@ -1,4 +1,8 @@
+{% if 'address' in ansible_default_ipv6 %}
 <VirtualHost {{ ansible_default_ipv4.address }}:80 [{{ ansible_default_ipv6.address }}]:80>
+{% else %}
+<VirtualHost {{ ansible_default_ipv4.address }}:80>
+{% endif %}
     ServerAdmin {{ server_admin }}
     ServerName {{ site_name }}
     ServerAlias {{ site_name }}
@@ -15,7 +19,11 @@
 </VirtualHost>
 
 <IfFile /usr/local/etc/dehydrated/certs/{{ site_name }}>
+{% if 'address' in ansible_default_ipv6 %}
 <VirtualHost {{ ansible_default_ipv4.address }}:443 [{{ ansible_default_ipv6.address }}]:443>
+{% else %}
+<VirtualHost {{ ansible_default_ipv4.address }}:443>
+{% endif %}
     ServerAdmin {{ server_admin }}
     ServerName {{ site_name }}
     ServerAlias {{ site_name }}
diff --git a/roles/setup-http-site-proxy/templates/apache-docker-proxy-site.j2 b/roles/setup-http-site-proxy/templates/apache-docker-proxy-site.j2
index d64dc95..b6a81c3 100644
--- a/roles/setup-http-site-proxy/templates/apache-docker-proxy-site.j2
+++ b/roles/setup-http-site-proxy/templates/apache-docker-proxy-site.j2
@@ -1,4 +1,8 @@
+{% if 'address' in ansible_default_ipv6 %}
 <VirtualHost {{ ansible_default_ipv4.address }}:80 [{{ ansible_default_ipv6.address }}]:80>
+{% else %}
+<VirtualHost {{ ansible_default_ipv4.address }}:80>
+{% endif %}
     ServerAdmin {{ server_admin }}
     ServerName {{ site_name }}
     ServerAlias {{ site_name }}
@@ -17,7 +21,11 @@
 <IfFile /usr/local/etc/dehydrated/certs/{{ site_name }}/cert.pem>
 <IfFile /usr/local/etc/dehydrated/certs/{{ site_name }}/privkey.pem>
 <IfFile /usr/local/etc/dehydrated/certs/{{ site_name }}/chain.pem>
+{% if 'address' in ansible_default_ipv6 %}
 <VirtualHost {{ ansible_default_ipv4.address }}:443 [{{ ansible_default_ipv6.address }}]:443>
+{% else %}
+<VirtualHost {{ ansible_default_ipv4.address }}:443>
+{% endif %}
     ServerAdmin {{ server_admin }}
     ServerName {{ site_name }}
     ServerAlias {{ site_name }}