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Andreas Schultz aschultz at tpip.netHi Andreas, Could you provide a pcap of the Create PDP Request and Response exchange between SGSN and GGSN? Regards Andreas ----- On Apr 3, 2017, at 7:50 AM, Andreas Mueller andreas.mueller at criticallabs.org wrote: > Hello, > > I tried to use a Huawei E1823 UMTS-Stick on a debian8-laptop with wvdial and > pppd to connect to a nano3G for getting an IP/Internet-connection via > UMTS/HSDPA. > The setup is mainly as described on > http://osmocom.org/projects/cellular-infrastructure/wiki/Getting_Started_with_3G. > > When using an android-Smartphone with the same configuration of the ggsn and the > other components the IP/Internet-connection is working. > > After pppd is started from wvdial it receives his local IP-address from the "net > 192.168.99.0/24" parameter of ggsn.conf and also the configured DNS-Server, but > no remote-IP, so 10.64.64.64 is used by pppd as a default value: > > ... > --> local IP address 192.168.99.5 > --> pppd: �[7f] > --> remote IP address 10.64.64.64 > --> pppd: �[7f] > --> primary DNS address 8.8.8.8 > --> pppd: �[7f] > > ..which results in an unusable ppp0-device: > ppp0 Link encap:Point-to-Point Protocol > inet addr:192.168.99.5 P-t-P:10.64.64.64 Mask:255.255.255.255 > UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1500 Metric:1 > > > Has anybody successfully used an UMTS-Stick with ggsn? > How can I tell ggsn to send his IP-Adress, which can be used by pppd as "remote > IP address"? > Are there special options for pppd which I have to use? > > > thanks and greetings, > > Andreas