Are you willing to break upgrades for people who currently use fall-back virtual hosts in combination with a forward proxy?
Are there any people doing this? By that I mean combining the services of Apache both as a webserver and as a forward proxy at the same time?
(I'm not a proxy expert, so perhaps there is a technical reason people can't do this now. But according to the documentation, I see no reason to believe that.)
Perhaps a safer solution would be to apply this behaviour to v2.1, but not to v2.0 - as v2.0 to v2.1 is a major upgrade, it seems safe to make such a behavior change there.
Thoughts?
Regards, Graham --
