By mesh i mean that both F5s are connected to both ASRs in a mesh. i.e. each F5 have a connection to each one of the two ASRs.
Currently we have 4 x /31 subnet that directly connects the F5s to the ASRs and then another /29 subnet that we use for the floating IP. The problem is that we are having trouble with the routing to the floating IP subnet as we can't route that subnet to the floating IP which is in the same subnet? Hope this makes sense. So lets say we have a 1.1.1.1/29 subnet in which the floating resides, on the ASR we want to route all traffic destined for 1.1.1.1/29 to F5s but can't route that subnet to an IP in the same subnet.