EKM Dash iSerial IPv6 connectivity

[vintozver]

Hi, I would like to ask about possibility of using IPv6 stack for the iSerial emulation.

Script (for IPv4):

Code: Select all

socat TCP-LISTEN:50000,reuseaddr,fork,max-children=1 file:/dev/ttySC0,raw,b9600,csize=2,nonblock,echo=0

Script (for IPv6):

Code: Select all

socat TCP6-LISTEN:50000,reuseaddr,fork,max-children=1 file:/dev/ttySC0,raw,b9600,csize=2,nonblock,echo=0

to start the server on the host, which is connected to the meter over RS485.
Connection over IPv4 is fine, I'm able to communicate with the meter.
IPv6 results in "300003101 Bad Connection to iSerial".
I verified that the TCP port is open in both cases (IPv4 & IPv6).

Please advise if I'm doing something wrong here. Thanks.

[Jameson]

Im sorry, this is quite a ways out of my wheelhouse. Im not sure if the iSerial supports IPV6 or not. I suspect not, because it is such a simple device. I tried searching the web for:
ATC-1000 "ipv6"
ATC-1200 "ipv6"
but did not come up with anything definitive.
We have stopped selling the iSerial as it required too much support. It has been replaced by the EKM Push3 gateway.

Please let us know what you find out!

[vintozver]

I ran socat with -v (debug mode) to see the traffic going in and out to the socket. Turns out, when IPv6 socket is listened, no traffic is flowing.
IPv4 socket - traffic flows normally.

I have set the "meter-home" DNS name in the iSerial address field.
When I assign a v4 address - things work smoothly.
When I remove the v4 address and leave v6 addresses only - no connection is established from the EKM Dash software.

Turns out that EKM Dash software only resolves the A records (IPv4). If no A records are found - then no connection is possible.
It would be cool to resolve both A and AAAA records in the EKM Dash software, so both IPv4 and IPv6 stacks supported properly.

[Jameson]

Very interesting. We will put it in the hopper for Dash development. Thank you for the explanation.