[44net] Routing problem?

Hi All, I'm new to the list and I find it very interesting. Let me introduce myself: ham since 1996, former call LU8WFY, primary interests CW, HF and later digital communications. Devoted to linux for more than ten years. Work in telecommunications since 2001. Now the problem: I got the assignment 44.153.164.4/30 <http://44.153.164.4/30> from the local coordinator (LU7ABF) and (after some NAT fighting with my Cisco 877 router) I was able to put it online from dynamic IP. From the gateway IP 44.153.164.5 there's no problem pinging to 44/8 and to the outside world. Ping from outside to .5 is also ok. But when I ping from outside to 44.153.164.6 there's no response. The strange thing is that, using tcpdump, I see no packets coming into the gateway from amprgw (of course they do show when the ping is to .5). Further testing from 44 net (using yo2tm.ampr.org network tools) showed that from 44 to my host everything works as expected. I guess that there's some routing problem between outside world and 44 net. I don't know in which way the routes from 44 are propagated to the rest of the internet. Maybe I´m missing something but I can't find the problem. Any help will be appreciated. Thanks! 73 Gustavo LU7WA