Dear all linux-wpan developers and users, This is my first time exploring 6LoWPAN and I would like to ask you some questions. Before getting into questions, these are the devices and set up that I use: -Raspberry Pi Model B Rev 2 -Raspbian OS -kernel from bluetooth-next ver 4.5.0-rc5+ -MRF24J40MA Transceiver After setting up and installing the wpan-tools, I got my interface work by prompting "ip link show" and there is something like: 3: wpan0 <BROADCAST,NOARP> mtu 123 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ieee802.15.4 ee:3b:07:84:64:8c:2a:71 brd ff:ff:ff:ff:ff:ff:ff The first thing I notice strange is why after the command "sudo ip link add link wpan0 name lowpan0 type lowpan" the output in "ip link show" is a bit different, especially in link/[825]: 7: lowpan0 <BROADCAST,MULTICAST> mtu 1280 qdisc noop state DOWN mode DEFAULT group default qlen 1 link/[825] ee:3b:07:84:64:8c:2a:71 brd ff:ff:ff:ff:ff:ff:ff So this is the FIRST QUESTION: 1. Is that normal/ok to have link/[825] instead of link/ieee802.15.4? The second thing I notice strange is after "sudo ip link set wpan0 up" for both wpan0 and lowpan0, the "ifconfig" command shows that these network interfaces have "Link encap:UNSPEC". If I'm not mistaken, Link encap shows the hardware family of the interface, right? So the SECOND QUESTION is: 2. Is that normal/ok to have Link encap:UNSPEC? Because this thing makes me suspicious about the next problem that I face. I tried to run wpan-ping daemon from /wpan-tools/wpan-ping by prompting "wpan-ping --daemon" but the output is "bind: No such device". I tried to make my own code to make a server program which listen to this socket interface. But when binding with bind(), I got the same error status "No device found". This leads to my THIRD QUESTION: 3. Why "no device found" appears? The transceiver is attached, the hardware address exists, the interface is up, and I am able to ping between two devices using ping6. I am suspicious that the problems that I ask you before have caused this problem. Do you know what's wrong here? Thank you for your time and help -- To unsubscribe from this list: send the line "unsubscribe linux-wpan" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
