I'm looking at getting an 877 with Advan IP (IP Plus). I intend to use one VLAN for a WAN and the ADSL as a backup interface. I'm I likely to have any issues running IP SEC over these links during "failover". I simply intend to use an IP Track to get this to fail over.
Done it before with just web traffic just want to make sure the IPSEC generated from the Cisco should be ok.