Making IPv6 device available on the internet

[Trygve Laugstøl]

Hei

I've gotten the ipv6_coap_server example to run on the nRF51-dongle. I got the bt0 interface after connecting to the device and I am able to ping the device.

My LAN has native IPv6 delivered from my ISP. The gateway router (broadband router) is getting its IPv6 with DHCP-PD and is allocated a /60 range, but is using stateless address configuration on the LAN. My desktop is getting a globally routable IPv6 address and can I can connect to and from the desktop from remote machines.

If I run radvd on my desktop I can give the device a global address, but as far as I know it shouldn't be necessary as my LAN already has a router.

I have tried to bridge the two interfaces with brctl but that fails when adding the bt0 interface.

My setup looks like this:

(nrf51)  <-- BT --> (BT dongle) <- USB -> Linux Host <- ethernet -> DSL router

What do I need to do to get the device to be available on the internet too?

[hirotakaster]

I think you don't have to use bridge device. If your DSL router can RA /62 prefix, you can try like this. I think you should use Linux Host as a IPv6/6lowpan edge router. DSL router(/60) <-> Linux Host(eth0:/62 RA from router, bt0:/64 prefix on randvd to bluetooth) <-> (nrf51)

[Trygve Laugstøl]

That sound like what I've been doing. I'm running radvd on my desktop and the device is getting an IP as expected. But packets won't flow from the LAN (or the WAN) to the device so some sort of routing/switching/bridging is missing.

[hirotakaster]

Can you check the IPv6 Global IP address(RA from your Linux host radvd) packet between the Linux and nrf51 using ping6? If you can check that Global IPv6 ping6 packet, next you have to check your Linux host IPv6 routing table and next check the IPv6 packet using tcpdump or Wireshark. Bay be you will find the point where the IPv6 packet is stopping.

[Trygve Laugstøl]

Hm, how is the routing table entries supposed to be added? That is not something that radvd can will do, is it?

[hirotakaster]

Of course, you must add your IPv6 routing table to Linux hosts using route command(or others) on your own. Radvd don't add routing table.

[Trygve Laugstøl]

What would the routing command look like?