Ben Duncan 8c6f66670a feat: add wan_bridge config field, update vpcd detection + network_detect ...

- config.go: Add WanBridge field to VPCDConfig (default "br-wan")
- spinifex.toml template: Add wan_bridge under [nodes.X.vpcd]
- admin.go: Auto-detect WAN bridge name from default route interface,
  add detectedWanBridge helper
- service.go: Wire WanBridge from cluster config to vpcd Config
- vpcd.go: Add WanBridge to Config, log it on startup, update comments
- network_detect.go: Fix isVirtualInterface to accept the default route
  device as a parameter instead of hardcoding br-external. Bridges like
  br-wan are now correctly treated as physical when they carry the
  default route.

Part of mulga-741.

2026-03-24 16:02:22 +10:00

..

spinifex

feat: add wan_bridge config field, update vpcd detection + network_detect

2026-03-24 16:02:22 +10:00