ISAKMP problem

["Trevor R.H. Clarke" <retrev@csh.rit.edu>]

I'm trying to set up a VPN from my home network (behind a nat firewall and a
cable modem) to my OBSD machine at work. I've used the sample policy and config
files from anoncvs and changed the IP addesses and shared secret. I run
isakmpd -d on the firewall and it sits there waiting for a connection (no msgs
yet). I run isakmpd -d on the otehr end of the tunnel and after a few seconds,
I get errors on both machines. The firewall errors are:

113107.795446 Default exchange_run: unexpected payload HASH
113107.804713 Default exchange_run: unexpected payload HASH

The machine at work has the following errors:

113003.753941 Default dropped message from 24.93.15.85 port 500 due to
notification type NO_PROPOSAL_CHOSEN
113003.755689 Default responder_recv_HASH_SA_NONCE: KEY_EXCH payload without a
group desc. attribute
113003.755745 Default dropped message from 24.93.15.85 port 500 due to
notification type NO_PROPOSAL_CHOSEN
113003.756052 Default group_get: group ID (0) out of range

After a few seconds, these repeat. Any Idea what is wrong?
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Trevor R.H. Clarke                     Computer Science House
Rochester Institute of Technology      Systems Programmer for ISC
retrev@csh.rit.edu                     trcsys@rit.edu
http://www.csh.rit.edu/~retrev/        finger retrev@csh.rit.edu for PGP key