OpenBSDs PF loadbalancing functionality does not support any sort of
failover rule rewriting, or conditional rulesets, does it?
For example, if I have PF round-robin to 4 webservers, and one goes
down, is there any way to make PF notice this and remove the downed host
from the pool, based on something as simple as missing ping replies?
Even cooler if it could interface with some SNMP service, like nagios.
If not supported natively, does anyone know of any other software I
could use to achieve something like this?
Alec
