On 01/17/12 20:08, Matthias Apitz wrote:
Hello,
I'm used to connect my FreeBSD 10-CURRENT netbook to Internet via PPP;
the provider in question is a German O2 UMTS provider; so far so good,
i.e. all is working as it should: outbound HTTP, SSH, SMTP (I'm just
sending this mail through such a connection), ...
what does not work is VoIP; the call is established via SIP (using a
STUN server), but remote audio RTP packages are not coming down; I
checked this with TCPDUMP: only upstream RTP is send, no incoming UDP;
as well I checked incoming TCP, for example incoming SSH or HTTP; it
seems that incoming UCP/TCP is just not coming through the PPP link;
before bother (complain) the provider with this, I wanted to ask if I
miss something in the PPP configuration to get incoming delivered;
note: I'm not talking about NAT to some stations on a LAN, I just want
get IP to the local host (interface tun6); as well I disabled ipf(8)
which I have configured normaly;
any ideas? thanks in advance
matthias
Matthias,
can you please check the IP address you're getting from your mobile
network provider? AFAICT most hand out IPv4 addresses from private
network address space (RFC-1918).
For some European countries I can tell, I've never seen routable
addresses being used on 3G networks. That might be the most likely cause
of your trouble.
All the best,
Volker
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