PS: What exactly does "record_route_preset()" do? The docs don't say much other than "don't use this unless you know what you're doing."
Registration is at least working (error above not withstanding) and I am not using that option, so I'm wondering if I truly need it.
It adds a Route header with the given IP address (and text). See the ONsip.org mediaproxy example config for an example.g g-)