How to change ipv6 address of cc2650 contiki node to local link address (fe80:xxx... for example) so that it responds to ping6 from a linux sbc which has lowpan0 wireless interface.

Do you run something like 6lbr to form a 6LowPAN network and let CC2650 to join the network first?

Nope. The sbc setup is completely different to that of contiki edge router setup. This case the driver for cc2520 mapper is enabled in device tree of 4.4 kernel and the debian os is flashed into wega.

I know it's different but it supposes to form a 6LowPAN network to make CC2650 joined first.

I'm sorry for not being very sure about it. I'm not very knowledgeable about the 6lowpan either i confess. Is it possible to hardcode the IPV6 address of the cc2650 contiki node in any of the contiki examples? or any suggestions to go ahead?

The IPv6 address is evolved from MAC address of SoC. I don't see why you need to change it. You should make sure CC2650 joins your 6LowPAN network first.

I tried to run udp-server from my cc2650 and I got my device ipv6 address as: aaaa::212:4b00:68b:c70b. For my knowledge, if it uses its MAC address to form the second half of the ipv6 address, there supposed to be "4b0F:E68b" in place of "4b00:068b" which made me think that the ip address can be changed, I mean even the second half.
May I know if any means to check the node if joins the 6lowpan?

All the packets from the edge router sbc with cc2531 dongle setup are visible in wireshark but no traffic is captured from the Wega sbc with cc2520 transceiver. Is it possible that the ipv6 stack running on wega sbc isnt going good with the uIPv6 stack of contiki nodes??

Are you sure they are on the same channel?

yes I made changes in contiki channel to 15 and PAN ID to 0x0001. yet no luck

Do you set sniffer to channel 15 too?

Oh sorry, May I know how to change sniffer channel please??

You can refer to processors.wiki.ti.com/.../Contiki_sniffer and change "#define RF_CORE_CONF_CHANNEL 25" to your used channel.

By the way, do you use the same PANID in Am335x wega sbc with cc2520 6lowpan transceiver and Contiki CC2650 node?

But I am using cc2531 dongle to sniff 6LoWPAN instructed from the link you shared earlier. I only got .hex file to flash into to dongle. I checked the pan id of riot node in its code .

The CC2531 prebuilt hex uses channel 25. If you don't have CC2538 for sniffer purpose, you have to change channel Am335x wega sbc with cc2520 6lowpan transceiver to channel 25.

Hi Yikai

I verified the ch no & PAN ID of my  6Lowpan network and kw2x riot node with the help of packet sniffer (+cc2531 dongle). Ch no:13 & PAN ID is 0x0001. I made changes in the contiki for the same channel and panid.

its still isnt able to ping. 7127.sbc_pinging_contiki.psd can be opened in the packet sniffer software for reference. I thing i am going wrong with the ipv6 addressing!!

root@wega:~# ping6 -i 1 fe80::212:4b00:79e:c70b%lowpan0

From fe80::fdfe:0:0:2a icmp_seq=1 Destination unreachable: Address unreachable

I suppose you should setup sniffer for 6LowPAN not use TI Packet Sniffer. You can refer to sunmaysky.blogspot.tw/.../how-to-setup-contiki-sniffer-for.html