Sorry for late reply, it's static I restarted the router and the IP is the same.
This could be by chance.
If there are not a lot of devices connected to the router it is more likely to get the same IP.
Anyhow, from what Filipe has told me, he has a dynamic internal IP.
Other information i can provide without risk:
Filipe's DNS seemed to have some trouble, since Filipe talked about errors with DNS in it.
We already put the google DNS server as preferred DNS server now, so that is ruled out.
Filipe can ping master.blockland.us without any packet loss.
This is a strange problem.