Better localhosts reorder conditional

linux/network/host.sls

@@ -12,7 +12,7 @@ linux_host_{{ name }}:
 
 {%- if host.address in grains.ipv4 %}
 
-{%- if host.names.1 in host.names.0 %}
+{%- if host.names|length > 1 and host.names.1 in host.names.0 %}
 {%- set before = host.names.1 + " " + host.names.0 %}
 {%- set after = host.names.0 + " " + host.names.1 %}
 {%- elif host.names.0 in host.names.1 %}