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Date: Mon, 13 Jul 2015 18:18:47 +0200
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Subject: Re: ping6 -> lowpan0 -> wpan0. Ping6 doesn't succeed to send messages
From: Baptiste Clenet <bapclenet@gmail.com>
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2015-07-13 16:59 GMT+02:00 Baptiste Clenet <bapclenet@gmail.com>:
> Hi,
>
> Here is how I set the network:
> modprobe at86rf230
> iwpan dev wpan0 set pan_id 0xbeef
> ip link set wpan0 up
> ip link add link wpan0 name lowpan0 type lowpan
> ip link set lowpan0 up
>
> Then I try to do:
> ping6 -I lowpan0 fe80::a8af:ac69:e53e:c7f1
>
> Nothing is sent. (I checked by sniffing the SPI pins). No errors from
> ping6 or other layers in the network stack.
>
> root@OpenWrt:/# ifconfig
> lowpan0   Link encap:UNSPEC  HWaddr
> 05-38-09-06-90-E0-5E-3E-00-00-00-00-00-00-00-00
>           inet6 addr: fe80::738:906:90e0:5e3e/64 Scope:Link
>           UP BROADCAST RUNNING MULTICAST  MTU:1280  Metric:1
>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0
>           RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
>
> wpan0     Link encap:UNSPEC  HWaddr
> 05-38-09-06-90-E0-5E-3E-00-00-00-00-00-00-00-00
>           UP BROADCAST RUNNING NOARP  MTU:127  Metric:1
>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:1 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:300
>           RX bytes:0 (0.0 B)  TX bytes:75 (75.0 B)
>
> (TX bytes:75 (75.0 B), seems to be sent when you up lowpan0 ?)
>
>
> Is my settings right? What should I check to make sure the data goes
> from each layer of the network stack?
>
> Regards,
>
> --
> Baptiste

More info:
Running Linux 4.1.0

root@OpenWrt:/# ip link
6: wpan0: <BROADCAST,NOARP,UP,LOWER_UP> mtu 127 qdisc fq_codel state
UNKNOWN mode DEFAULT group default qlen 300
    link/ieee802.15.4 ef:57:b2:a9:2f:4e:90:76 brd ff:ff:ff:ff:ff:ff:ff:ff
7: lowpan0@NONE: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1280 qdisc
noqueue state UNKNOWN mode DEFAULT group default
    link/[825] ef:57:b2:a9:2f:4e:90:76 brd ff:ff:ff:ff:ff:ff:ff:ff

root@OpenWrt:/# iwpan phy
wpan_phy phy0
supported channels:
        page 0: 0,1,2,3,4,5,6,7,8,9,10
        page 2: 0,1,2,3,4,5,6,7,8,9,10
current_page: 0
current_channel: 5
cca_mode: 1
tx_power: 0

root@OpenWrt:/# iwpan dev
phy#0
        Interface wpan0
                ifindex 6
                wpan_dev 0x1
                extended_addr 0xef57b2a92f4e9076
                short_addr 0xffff
                pan_id 0xbeef
                type node
                max_frame_retries -1
                min_be 3
                max_be 5
                max_csma_backoffs 4
                lbt 0

Let me know if you need more info.

-- 
Baptiste