Wait until you find out about vlans
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I use Arch btw
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Fuck thats why my conky is fucked.
I always just derive the interface name from first principles. Like, if I want to know which interface will be used to get out to the internet in a script, I'll just find the one that's L2 adjacent with the default gateway. If I'm given an egress or cidr, I'll just find the interface that has that IP. Modern iproute2
has a JSON output option which makes getting this information pretty trivial. Doing that means that it doesn't matter what scheme your OS is using.
I personally prefer the persistent names for Ethernet, although I don't like them for WiFi. Luckily, it seems like my wireless adapter always just ends up as wlan0. I'm not sure why that's the case, but it works out well in the end for me.
So I do HPC installations, and using Mellanox/NVIDIA adapters in Ethernet mode absolutely sucks. First, when you initially install them, they’re named something like ens2f0, where “2” generally corresponds to the PCI slot. Pretty easy, until you install MOFED. Yeah, I know you don’t need MOFED, but the drivers included in RHEL are waaay old. Anyway, after installing the newer drivers, that exact same interface becomes ens2f0np0!
What’s even better is there’s no guarantee that a PCI Ethernet card in PCI slot 2 will be “ens2…” which I would argue is predictive!
life-long Kali fan