Building Debian 13 anycast nodes from cloud images with cloud-init support: configuring multiple loopback addresses using netplan instead of /etc/network/interfaces, exabgp service configuration for anycast BGP route announcements, and deploying redundant anycasted DNS infrastructure.
Troubleshooting RouterOS User Manager RADIUS server in routed networks: discovering that RADIUS replies sourced from loopback interfaces are rejected by clients, requiring RADIUS server to use interface IPs or non-loopback addresses for proper operation.
Testing RouterOS 7 container functionality: building static Go binary, creating Docker image, exporting and importing container on RB5009UPr+S+, configuring veth interfaces and bridge networking, with sub-5ms latency for containerized web services.
