Hi Slvere,
Any ideas?
You can't switch APM policies on a Virtual Server based on the requested HOST-Header.
You would need to deploy a VIP-targeting-VIP setup to become able to inspect the HOST-header on an external VS and then selectively forward the traffic to multiple internal VS's based on the requested HOST-headers. Each of the internal VS's may then have a dedicated APM Policy...
www.site-a.com -> VIP 1.1.1.1 -> VIP 127.1.1.1 -> APM Policy A
www.site-b.com -> VIP 1.1.1.1 -> VIP 127.2.2.2 -> APM Policy B
www.site-c.com -> VIP 1.1.1.1 -> VIP 127.3.3.3 -> APM Policy C
For a brief explanation of VIP-targeting-VIP setups you may check out...
https://devcentral.f5.com/articles/lightboard-lessons-vip-targeting-vip
Cheers, Kai