A practical walkthrough of configuring a Cisco 1941/K9 router as a home office gateway backup. Covers console access from Alpine Linux using screen, pulling config from a live router via SSHv1 in Docker, adding IPv6 (SLAAC + DHCPv6), pushing config over serial, and fixing policy routing on a dual-NIC Linux host.

How to set up a Cisco 1941/K9 as a home office gateway — including console access via serial, cloning config from a running router, adding IPv6 with SLAAC and DHCPv6, and fixing dual-NIC asymmetric routing on Alpine Linux.

Configure a Cisco 1941 Router as Your Home Office Gateway with IPv6

A step-by-step guide to setting up an Alpine Linux box as a backup WAN gateway for your home or small business network, using Android USB tethering as the mobile data source. Includes a failover script and full network configuration.

Turn an old PC or mini box running Alpine Linux into a backup WAN gateway using your existing Android phone's USB tethering — no extra SIM, no extra plan, no extra cost.

Tag: Gateway

Tag: Gateway

Configure a Cisco 1941 Router as Your Home Office Gateway with IPv6

Create a Backup Mobile Data WAN for Your Small Business / Home Network