> I was also aware this option existed. I should perhaps have
> specifically said that this isn't what I wanted. I see little point in
> having IPv6/Ethernet/UDP/IPv4 instead of IPv6/IPv4/UDP/IPv4. The
> Ethernet framing is very useful for making two LANs seem like they're
> bridged, but for reducing the number of layers, it's not so useful.
Ah, ok. The other solution that I know of is to use IPsec; that would
give you IPv6/ESP/IPv4 (and ESP packets are relatively small). Of
course, that doesn't work if you need the "over UDP" part, i.e. to get
past firewalls.
FreeSWAN claims IPv6 support... http://www.freeswan.org/
--
Harald Koch <chk,AT,pobox,DOT,com>