When we use vpn-address-assign dhcp we sometimes (often actually) get a failure to assign an address. This shows up as either an error 738 or error 720 on windows native clients.

Reconnecting immediately after the error generally works fine.

Does anyone else get this? Anyone have any ideas as to how to prevent these failures?

From viewing the logs I see the VPN successfully acquire an address from the DHCP server, so there are no problems on that end.