WireGuard has been in the Linux kernel since March 2020, Tailscale crossed $100M ARR in early 2026, and Headscale has passed 42,000 GitHub stars. If you self-host more than two services, a free or self-controlled mesh VPN transforms remote access without a single firewall rule.

DN42 counted over 1,800 AS numbers and 12,000 announced prefixes as of April 2026. BIRD 2.16 and FRRouting 10.2 make BGP peering accessible from a single Docker container, and a /48 IPv6 prefix takes under 30 lines of config to announce.