MoTeC Global Forum

I have had intermittent connection problems with windows 10 and a C125 display for a while now. When the software was unable to find the device I would have to uninstall the dash software and re-install it to be able to connect to the dash. I tried turning off the firewall/AV/VPN connections but it has not helped.

Looking at an older forum post it mentioned the connection log which i dug up. In it there are a few lines which are below that look to be a problemwith the connection to the dash

Fri Jan 3 17:03:18 2020: Registering new address record for 169.254.213.51 on Ethernet 2.IPv4.
Fri Jan 3 17:03:21 2020: Received record with bad TTL [Racecraft.local IN A 169.254.213.51 ; ttl=60]. Refreshing.
Fri Jan 3 17:03:21 2020: Received record with bad TTL [Racecraft.local IN A 192.168.1.163 ; ttl=60]. Refreshing.
Fri Jan 3 17:03:22 2020: Received record with bad TTL [Racecraft.local IN A 169.254.213.51 ; ttl=60]. Refreshing.
Fri Jan 3 17:03:22 2020: Received record with bad TTL [Racecraft.local IN A 192.168.1.163 ; ttl=60]. Refreshing.
Fri Jan 3 17:10:09 2020: Interface Ethernet 2.IPv4 no longer relevant for mDNS.
Fri Jan 3 17:10:09 2020: Leaving mDNS multicast group on interface Ethernet 2.IPv4 with address 169.254.213.51.
Fri Jan 3 17:10:09 2020: Withdrawing address record for 169.254.213.51 on Ethernet 2.
Fri Jan 3 17:10:09 2020: Received record with bad TTL [Racecraft.local IN A 192.168.1.163 ; ttl=60]. Refreshing.
Fri Jan 3 17:10:12 2020: Received record with bad TTL [Racecraft.local IN A 192.168.1.163 ; ttl=60]. Refreshing.
Fri Jan 3 17:10:12 2020: Received record with bad TTL [Racecraft.local IN A 192.168.1.163 ; ttl=60]. Refreshing.

Any suggestions as to what would be causing this and how to correct it?

Thanks in advance

When this happens, have you tried power-cycling the dash, and re-booting the PC?

Can you describe your network setup? -- Is the dash connected directly to the PC with twisted pair ethernet cable, or are you connected them each to other network devices (like an ethernet switch, or using a wifi router)?

BTW - my biggest connection problem is when I inadvertently start the C185 dash manager instead of the C125 (or vis-versa). The two software look the same, but won't find the others device....

I had issues with a bad pair in one of the cables I was using from memory. Have had issues where the dash needed to power cycle as well as my laptop requiring a restart. sometimes the most obvious things that you would normally rule out, just work.

David Ferguson wrote:When this happens, have you tried power-cycling the dash, and re-booting the PC?

Can you describe your network setup? -- Is the dash connected directly to the PC with twisted pair ethernet cable, or are you connected them each to other network devices (like an ethernet switch, or using a wifi router)?

BTW - my biggest connection problem is when I inadvertently start the C185 dash manager instead of the C125 (or vis-versa). The two software look the same, but won't find the others device....

I have tried all the possible combinations of cycling the dash, PC, plugging in the ethernet cable. I made a chart to do combos to make sure I wasnt repeating a test either. It is a direct connection with ethernet cable. I tried a different cable as well just to make sure I didnt have a bad one.

I confirmed I have the c125 software, I was using the august release and tried the sept release but I am getting the same outcome.

z0mgchris wrote:I had issues with a bad pair in one of the cables I was using from memory. Have had issues where the dash needed to power cycle as well as my laptop requiring a restart. sometimes the most obvious things that you would normally rule out, just work.

I grabbed a new cable last night just to make sure. I pulled one from a working network array I have at home and ran a cable test on it to make sure all the pairs were good which they are.

That's an odd one! Hopefully one of the staff can chime in and have a look into it for you! would be interesting to see what the resolution is! if you fix it in the meantime, let us know!

Try enabling IPV6 on your PC

SprinterTRD wrote:Try enabling IPV6 on your PC

That was it. Under the network adapter settings the IPV6 option had gotten de-selected.

I am back in business.