Update observer.default.erb

DHB26 is IPv4 only.

Author: AlexanderMalmstrom

modules/observer/templates/observer.default.erb

@@ -1,4 +1,4 @@
 # AUTOGENERATED BY PUPPET
 # All manual changes will be overwritten
 
-ARGS="-dns <%= @nameservers.join(',') -%> -icmp-targets <%= @icmp_target %> -qname <%= @dns_target %> -interface <%= @interface %>"
+ARGS="-dns -disable6 <%= @nameservers.join(',') -%> -icmp-targets <%= @icmp_target %> -qname <%= @dns_target %> -interface <%= @interface %>"