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Quick update on the router issues we've been having - figured out what was causing the instability.

The Problem: The network interface cards (NICs) weren't persistently mapped to specific interface names. Every time the router restarted, Linux would assign interface names (like enp3s0, enp4s0, etc.) based on which card came up first during boot. This meant our WAN interface could randomly end up on a different interface name each restart - which broke all our routing configs, HAProxy settings, and firewall rules that expected WAN to always be on the same interface.

The Fix: I created udev rules that bind each NIC's MAC address to a specific interface name. Now no matter what order they initialize during boot, each physical card always gets assigned to the same interface name.

What are those "enp3s0" names? They're called network interface names (or sometimes "device names"). Linux uses them to identify each network card. The naming follows a pattern:

  • en = ethernet
  • p3 = PCI bus 3
  • s0 = slot 0

So "enp3s0" literally means "the ethernet card on PCI bus 3, slot 0"

Bottom line: router should be rock solid now on restarts. No more interface shuffling.

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china/russia are not our enemy.. a corrupt foreign controlled non representing govt is our enemy.

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