DNS-Module: Add "aux" as optional to every type for simple DNS-Balancing!
Regarding MyDNS Docs the "aux"-Field can be used not even for MX, but for all Record-Types to realise a simple Balancer-Setup:
http://mydns.bboy.net/doc/html/mydns_21.html
To be able to use this, the DNS-Type Templates would need to be updated to allow adding/editing this field.