Browse incidents, troubleshooting guides, AI diagnostics, verified fixes and community discussions related to Networking.
## Environment Proxmox VE 7.x cluster. Backups created with vzdump and restored to different nodes for quick recovery/testing. Network model is default LXC veth with MAC sometimes specified in config as 'hwaddr:'. Switching node and restore automati...
## Environment Edge office router in active-active dual‑WAN configuration: WAN1 (1 Gbps, primary), WAN2 (100 Mbps, backup). Router uses per‑session hashing with health probes (ICMP + HTTP every 5s). Session stickiness TTL set to 300s. Large HTTP/FTP...
## Environment Home lab: OpenWrt 22.03 router configured DHCPv6-only (prefix delegation routed to LAN), NAT64/DNS64 implemented by tayga+bind on same box; client OS Ubuntu 22.04 LTS and iOS 16.5 devices on LAN ## Symptoms From client browsers, nav...
## Environment Edge router: OpenWrt 22.03 on ARM appliance; LAN clients include Ubuntu 22.04 laptops, Android phones, and an Apple TV; upstream prefix delegated via ISP DHCPv6-PD. Router configured to disable DHCPv4 and serve only DHCPv6/SLAAC. ## ...
## Environment Proxmox KVM host (Linux 5.15), Mellanox/Intel dual-port 25Gb NIC; firmware and vendor driver updated to latest on host during maintenance. Guests use virtio-net vNICs bridged to host bond; previously ran with MTU 9000 and stable. ## ...
## Environment Primary and one async replica hosted in same data center (MySQL 8.0.33), replication configured using GTID and a replication user with REPLICATION SLAVE. Replication was healthy for weeks. Intermittent 10–30s packet loss events report...
## Environment Small office: 3 identical enterprise 802.11ac APs (vendor firmware v3.2.1), controller-managed SSID on 5 GHz only, mixed client set (laptops, smartphones). Airtime-fairness and TX power auto enabled via controller at 02:00 during main...
## Environment Docker Swarm cluster (4 manager/worker mixed roles) running Docker Engine 20.10.8 on Ubuntu 18.04 hosts. Multiple overlay networks created for different stacks; some were created manually with --subnet and custom options. Under high i...
## Environment Company-issued Windows 11 laptops (build 22H2) joined to Active Directory domain. Devices connect to two wireless SSIDs: 'Corp-Internal' on VLAN 100 (corporate DHCP/DNS) and 'Corp-Guest' on VLAN 210 (guest DHCP). Both SSIDs use the sa...
## Environment OPNsense 22.1 firewall at HQ terminating IKEv2 IPsec tunnel to Cisco ASR at remote site; both ends use NAT on the WAN side; MTU on LAN interfaces set to 1500; encapsulation adds ~60 bytes of overhead; endpoints include Linux file serv...