Hello Fred, Interesting question. I didn't ever used two netifs at the same time, but maybe you should use different MAC addresses for both concections?
Best regards Artur -----Ursprüngliche Nachricht----- Von: [email protected] [mailto:[email protected]] Im Auftrag von Fred39 Gesendet: Freitag, 22. Juni 2012 15:21 An: [email protected] Betreff: Re: [lwip-users] Problem using 2 Netifs Ok i found the problem, both netifs had similar ip configuration "same subnet" which was the problem thus the packets where send to the first netif in the list :) Is this behaviour specified somewhere ? Regards Fred39 wrote: > > Hi LWIP Users, > > I am currently working on a device which has two network interfaces. > One from the uC and one over USB which is a virtual network device. My > Lwip Version is 1.1.1 i know its old but i am not allowed to change > it. Could lwip make problems when 2 netifs are registred? I set my uC > netif as default because it uses dhcp/static ip for that i use the > global netif_default for it. The virtual netif has a static ip. > My Pseudo code looks like this: > > 1. init_lwip > 2. HW init uC > 3. netif_add(uCnetif,tcpip_input) > 4. HW_init virtual device > 5. netif_add(virtualnetif,tcpip_input) > > In the global variable netif_list is see both of the netifs with > correct settings. I only set the uC netif as default, because for this > i use different protocol for IP address (DHCP or static) and i set IP > through my application thread in a thread save way :) > > I am now facing a problem that my upperlayer tasks using tcp or udp > are not working when both interfaces are added. If only the uC netif > is initialized it works. > When 2 netifs over Wireshark is see that data is send to my device but > i get a SACK_PERM=1, the device is not recveiving the data. > Is this phenomen familiar to somebody? Should it be possible to use 2 > netifs in the old lwip 1.1.1 ? > > Where could i start searching for the problem. > > Regards > -- View this message in context: http://old.nabble.com/Problem-using-2-Netifs-tp34054004p34054340.html Sent from the lwip-users mailing list archive at Nabble.com. _______________________________________________ lwip-users mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/lwip-users _______________________________________________ lwip-users mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/lwip-users
