1. Transparent proxy using redirect

iptables -t nat -A OUTPUT -p tcp -d 198.145.29.83 -j REDIRECT --to-port 4000

tunnel add 4000,listen,redirect :proxy,addr=@original.addr @proxyaddr

- check forward usage

BUGS:
	Direct connection also possible. In this case original.addr will be equal to listen address.
	This happens when ipv4 is used.

2. Transparent proxy using tproxy

- todo