What options are there if you do not have a public ipv4 address open for incoming connections? I used to do a lot of tricks in the past with the bitcoin client. A proxy or agent on a public machine would be a possibility, don't want to run alethzero on a remote because of gui lag.
Putting up a teredo ipv6 tunnel is simple but then I read that ipv6 is still lacking.
Any ideas? Paying for a proxy service would be a possible option.