> Okay, at this point I'm blaming the ISP issued router. I am using double NAT at home, and regarding the ISP network part, I can't use 10.0.0.1 in my setup because this is used by my ISP as a gateway for pppoe.
I've reread your setup many times, but it is not clear for me what you have at home and what you are trying to achieve. Sorry. Give a full network schematics with interfaces and IPs and maybe someone can tell what you are doing wrong. Bye.