Networking

🖧 Network Device: Network Interface Card (NIC) A Network Interface Card (NIC) is a hardware component that allows a computer or device to connect to a network. It operates at both the Physical Layer (Layer 1) and Data Link Layer (Layer 2) of the OSI model. 🔹 What is a NIC? A NIC is an internal hardware component (or sometimes external) that provides the physical interface for a device to connect to a network. It contains the necessary circuitry to communicate using Ethernet, Wi-Fi, or other networking standards. ...

Fix ‘sch_htb Module Not Found’ Error in Virt-Manager on Arch Linux While setting up virt-manager on Arch Linux, I encountered the following error when trying to start the default network: modprobe: FATAL: Module sch_htb not found in directory /lib/modules/6.14.3-arch1-1 This error prevented virtual machines from accessing the network through virt-manager. Cause The sch_htb module (Hierarchical Token Bucket) is critical for network traffic shaping. If missing, it usually means: Kernel headers are missing. The current kernel lacks needed networking modules. Solution Install the correct packages: ...