Comment 1 for bug 520269

I think you are refering to the "Host" header in HTTP as a way of co-locating multiple services. In the context of the current Eucalyptus system this isn't possible to support without the use of the DNS service. For example, virtual bucket hosting in S3 already works this way when DNS is enabled and configured correctly (e.g., http://bucket_name.eucalyptus_domain_name/). Adding support for this is likely when/if DNS-enabled becomes the standard installation mode.

cheers,
chris