Use default IPv6 address for new virtual servers?
By default (when this option is set to No), Virtualmin will not add DNS
entries or a webserver configuration to new virtual servers for the system's
default IPv6 address. However, selecting Yes here will change the
default for new domains to use the system's primary IPv6 address. At creation
time the user can still select to use a private IPv6 address or none at all
though.