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Tool/software:
Hello, i have a question about generating IP address in WI-Sun Network. O undestand that ipv6 is based on Primary IEEE Address. But i Have mismatch in one byte. I have two examples:
Primary IEEE Adress -> Wi-Sun address
00:12:4B:00:33:88:1A:A4 -> 2020:ABCD:0000:0000:0212:4B00:3388:1AA4
00:12:4B:00:33:88:1A:A0 -> 2020:ABCD:0000:0000:0212:4B00:3388:1AA0
First IEEE byte is changing from 00 to 02. Other bytes are the same. Can you tell me why?
And when I use "rssi" command in pySpinel I have good IEEE with 00 no 02 on first byte
spinel-cli > rssi Number of Neighbor Nodes = 1 Neighbor Node RSSI metrics are (EUI, RSSI_IN, RSSI_OUT): 00124b0033881aa0, -162.625dBm, -162.375dBm
HI Sebastian,
Where are you extracting those IP addresses from?
I have a feeling that the last byte of the second IP may be trimmed out due to an incorrect memcpy size argument or such.
Regards,
Arthur
Hi Arthur,
I read the IEEE primary address using Uniflash and the IP address using a PySpinel script. I use the connecteddevices
command for PySpinel.
spinel-cli > connecteddevices List of connected devices currently in routing table: 2020:abcd::212:4b00:3388:1aa0 Number of connected devices: 1 Done
I investigated the problem with tests. They show that this different half byte is created by the XOR operation with the number 0x02.
0x00 -> 0x02
0x01 -> 0x03
0x03 -> 0x01
------------------
0x0D -> 0x0F
0x0E -> 0x0C
0x0F -> 0x0D