Server Installation 2020

[TerryJC]

I thought the default was to have predictable names but perhaps I was wrong.

I'm nit sure what you mean with this. The RPi does what it does and this is defined by The Raspberry Pi OS. If you are talking about someone (ie me) making the default predictable names then I wouldn't have done that because I didn't know that you could.

[hamishmb]

Ah no, I meant I thought the default configuration out of the box for Raspbian/Raspberry Pi OS was to have the predictable interface names link enp0s2 or enx********, but I must be wrong, seeing as the river system pis aren't using them.

[hamishmb]

We seem to be having issues with the network stability.

I have been slowly updating the WMT Pis to proactively fix a potential network issue, but I keep getting intermittent connection failed issues when downloading packages eg:

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Err:1 http://raspbian.raspberrypi.org/raspbian buster/main armhf libsystemd0 armhf <version_hidden>
  Connection failed [IP: 93.93.128.193 80]

Any ideas what might be causing this?

I don't think it's at the (Raspbian repo) server end because it's happening with multiple servers and the VPN connection sometimes hangs for a long time.

[TerryJC]

Hamish,

Have you remembered to issue:

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sudo ifconfig eno1 mtu 576

or similar in a terminal at your end?

[hamishmb]

Yeah, I made a script to handle connection and disconnection because I kept forgetting

Just double checked interface names haven't changed, and it's all fine.

[TerryJC]

Have you tried rebooting the VPN Server?

[hamishmb]

No, I'll try that soon. I'm going to update the kernel on it as well. I do seem to have lost the VPN connection now - did you just reboot it?

[TerryJC]

No. But I did log in to see the stats. I'll disconnect from the VPN.

[TerryJC]

The stats looked OK BTW.

[TerryJC]

Hamish,

A thought. When we first had this problem and started using the MTU kluge, I seem to recall that you set the MTU on the target devices on site as well as on your local machine. Could this have become unset? Perhaps during an update? Is the setting persistent after a reboot?