I'm in the same boat. Actually, I don't really need an internal ADSL modem per se, primarily I just need a "managed" ADSL device from which I can automatically obtain line quality and carrier loss information via SNMP or a serial port or some other OpenBSD-compatible mechanism.
I had one of the little Cisco ADSL external bridges (675?), but it eventually melted down and just stopped working entirely. Are there any plans to import "ueaglectl" to OpenBSD? http://damien.bergamini.free.fr/ueagle/ Thanks, Kevin