Can you apply iRule to a pool member instead of applying it to a VIP?

Can you provide more detail? While you cannot apply the iRule to a pool member, within the iRule you can perform different actions based on pool member selection.

Well, we have two traffic destinations. For one destination we want to add a header on top of the IP packet and for the second destination (pool member) we do not want to add any additional headers. That is because the two servers receiving the traffic work differently. One expects to see a header and one doesn't.

For one destination we want to add a header on top of the IP packet

what is traffic type? is it http or something else?

what header are you talking about? is it http header, tcp option (tcp header) or something else?

The traffic is bespoke data packets sent across non-standard ports.

It does not conform to http/https.

jason has written an excellent article as following. it may not be the same as yours but hope it is helpful.

Oracle RAC Connection String Rewrite by Jason Rahm

Thank you so much!

Humair