No paths / not receiving beacons when checking AS configuration

[SonProCode]

I am trying to set up an AS in SCION Lab by running it on a VM. Everything was going well until I checked whether the beacons had been registered ( I followed the instructions in https://docs.scionlab.org/content/config/check.html), and the returned list was empty. I have included the log from the border router (attached in the image), and I noticed a line stating:

Nov 01 11:09:13 scionlab-ffaa-1-1184 scion-control-service[14364]: 2024/11/01 11:09:13 connection doesn't allow setting of receive buffer size. Not a *net.UDPConn?. See https://github.com/quic-go/quic-go/wiki/

Could this be the reason for the issue? I have attempted to follow the troubleshooting section to fix the problem but to no avail. I also tried resolving the issue according to the instructions on https://github.com/quic-go/quic-go/wiki/, but after all, I still cannot find the beacon.

[juagargi]

Hi @SonProCode,
The message from the QUIC stack is not the cause.
If you don't receive beacons from the attachment point, there could be several causes:

• Are you using a VPN? is the VPN tunnel up and working?
• Is the border router running? does it receive BFD traffic? (e.g. check with tcpdump)
• Are the AS certificates up to date?

Both the border router and the control service have an HTTP API that you can query from the machine, where it will tell you their metrics. That is useful for instance to check the BR has BFD packets back and forth, etc.

[SonProCode]

Thanks @juagargi for your response!

1. I am using a VPN, and I’ve checked the tunnel; it’s still working normally.
2. My Border Router is also operating normally. I queried the BR and confirmed it is still receiving BFD traffic, as shown in the image below.
   
3. I haven't fully grasped this part. Can you tell me how to retrieve the AS certificate and verify that it’s up to date?

By the way, this is the latest picture that i took concerning the SCIONLab Health Check.