Has anybody managed to get native IPSec working?

[joey at clean.q7.com (Joe Pruett)]

yes, i got ipsec working.  and yes there are some issues with the 
network-scripts bits.  redhat is aware of them, and hopefully they'll be 
fixed in u1 or u2 release of rhel4.  what i ended up doing was hand 
creating the bits and a small startup script.  getting it to work with 
iptables is even more fun if you try to avoid private network addresses 
from leaking in/out of your network.  i can provide the scripts and setups 
i used if you want to contact me directly.  or if enough people care, i 
can send things to the list.