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Date: Thu, 14 Jan 2010 21:07:30 +0100
From: Miroslav Lachman <000.fbsd@quip.cz>
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To: kevin <k@kevinkevin.com>
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Cc: freebsd-pf@freebsd.org
Subject: Re: pf > round robin
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kevin wrote:
> Hello,
>
> I'm sure this topic has come up previously, however I'm just curious if
> FreeBSD's PF + round robin load balancing to tcp port 80 has any status
> checking built in.

No, there is not. PF is packet filter, not swiss army knife

> That is to say, if server1's tcp 80 is not even responsive, does PF still
> send traffic to it? It would be great if this was built in. If not (as I
> suspect), what alternatives could be had to implement some sort of status
> checking, while still using PF's round-robing directive?

There is net/relayd in ports (from OpenBSD project, as PF) to things 
like this.

Miroslav Lachman