/dev/stderr

Wireguard returns "RTNETLINK answers: No such device" error -> low MTU

I use a Wireguard VPN to tunnel my traffic when on public wifi - but I couldn't use Wireguard from a recent network!  This specific network was causing Wireguard to fail with the error message "RTNETLINK answers: No such device." I hadn't changed any configurations, so I was very confused

Removing old ZFS snapshots

I back up multiple computers to my Truenas instance hourly, but these snapshots hang around without an easy way to prune them (computers I back up include Ubuntu [http://www.devstderr.com/ubuntu-syncoid/] and Proxmox [https://www.devstderr.com/backup-proxmox-syncoid/]). But over a couple years one of my datasets seemed

Proxmox - Clone VM/Container with NFS/CIFS mount

I have a NAS with storage I need to access from a VM. Proxmox requires this to be mounted directed in Proxmox and passed to the VM/Container as a mount point. This worked great until... I wanted to clone my VM. Well, it turns out Proxmox can't because of

Backup Proxmox (single node, but including VM's!) with sanoid/syncoid on a schedule

First of all, I only use a one node Proxmox server meaning all my data is in a single pool. If you use multiple nodes this is probably more complex... I already backup my Ubuntu computer running ZFS using sanoid/syncoid so the most efficient way for me to back

systemd for persistent SOCKS proxy

I'd like one browser to connect through a VPN but my main internet connection (and other browsers) to go through my ISP. I already have a VPN running on a VM on Proxmox and figured I could use it as a proxy. But if the SSH connection dies the proxy

/dev/stderr © 2026