I updated from CVS (July 16 1532 UTC), rebuilt and rebooted and now
racoon won't start.

racoon -F says:

Foreground mode.
2007-07-16 14:00:44: INFO: @(#)ipsec-tools cvs (http://ipsec-tools.sourceforge.net)
2007-07-16 14:00:44: INFO: @(#)This product linked OpenSSL 0.9.8e 23 Feb 2007 (http://www.openssl.org/)
2007-07-16 14:00:44: INFO: Reading configuration from "/etc/racoon/racoon.conf"
2007-07-16 14:00:44: INFO: Resize address pool from 0 to 255
2007-07-16 14:00:44: NOTIFY: NAT-T is enabled, autoconfiguring ports
2007-07-16 14:00:44: ERROR: no address could be bound.

There are no listen directives in racoon.conf and I've been running it
just fine with current from mid-April.  I do have nat traversal on, but
commenting that out didn't help.

There are two interfaces, wm0 and ath0 (plus lo0).  wm0 is down, and
ath0 has a v4 address and works fine.