feat(tower): use motherboard NIC with static IP 192.168.0.10#188
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Tower's wired link ran through a USB ethernet adapter built into the monitor, so turning the screen off dropped the connection. Move to the motherboard NIC (enp11s0) via a NetworkManager static profile so the link survives the display being off. While here, move tower off .130 (inside the DHCP pool) to .10 (below the pool, can't collide with a dynamic lease), defined on tower itself rather than as a pi DHCP reservation. DNS points at pi for split-horizon resolution. Update the dnsmasq split-horizon records and drop the now obsolete USB-MAC reservation; update cockpit/homepage by-IP allow lists. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
etrobert
approved these changes
Jun 6, 2026
This was referenced Jun 6, 2026
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Summary
enp11s0) via a NetworkManager static profile so the link survives the display being off..130(inside the DHCP pool.50–.250) to.10(below the pool, can't collide with a dynamic lease), defined on tower rather than as a pi DHCP reservation — mirroring how pi sets its own.18viaensureProfiles."end0-static"..18) for DNS so split-horizon resolution of internal*.etiennerobert.comnames works on tower too (no NAT hairpin on the router, so public resolution would loop back and fail).host-records.130 → .10, drop the obsolete USB-MACdhcp-hostreservation, and update cockpit/homepage by-IP allow lists.Manual steps required (out of repo)
enp11s0).192.168.0.130to192.168.0.10, else external HTTPS tofiles/creatures/adele/…etiennerobert.combreaks.Test plan
nix build .#nixosConfigurations.tower.config.system.build.toplevelsucceeds (x86_64).host-records →.10,dhcp-hostremoved). pi toplevel can't be built on x86_64 (aarch64 target).ssh tower 'ip -4 addr show enp11s0'shows192.168.0.10, default route viaenp11s0.ssh towerstays reachable.ssh tower 'getent hosts creatures.etiennerobert.com'→192.168.0.10(split-horizon via pi).dig @192.168.0.18 files.etiennerobert.com +short→192.168.0.10.https://192.168.0.10:9090(cockpit),http://192.168.0.10:8082(homepage).curl -sI https://files.etiennerobert.comreturns 200/redirect.🤖 Generated with Claude Code