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OpenWrt bridge ordering and WAN detection patterns. Use when managing Proxmox bridges, configuring WAN/LAN interfaces, or debugging OpenWrt network topology issues.
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| name | openwrt-network-topology |
| description | OpenWrt bridge ordering and WAN detection patterns. Use when managing Proxmox bridges, configuring WAN/LAN interfaces, or debugging OpenWrt network topology issues. |
net0/eth0, remaining bridges as LAN ports. Most other VMs need only ONE LAN bridge.proxmox_bridges via the host's default route. NEVER hardcode a bridge as WAN. Override with openwrt_wan_bridge in host_vars only if auto-detection fails.net0/eth0:
_ordered_bridges: [_wan_bridge] + (proxmox_all_bridges | difference([_wan_bridge]) | sort)
vmbr0 always WAN. When the modem was on vmbr0, the Proxmox GUI became unreachable from LAN nodes.add_host as upstream_wan_prefixopenwrt_lan_subnet_candidates and pick first whose prefix differs from WANWhen OpenWrt is primary router, Proxmox host needs predictable IP on LAN bridge:
.2)ip addr add on LAN bridge (immediate, current session)ansible-bridges.conf from inet manual to inet dhcpNEVER use separate config file with iface <bridge> inet dhcp. It conflicts with inet manual stanza in bridges config.
NEVER leave stale IPs on non-LAN bridges in same subnet as LAN bridge. Two routes for same /24 on different bridges causes kernel to use wrong interface, breaking LAN VM connectivity.
To reach OpenWrt at default 192.168.1.1 during initial setup:
192.168.1.2) to WAN bridge on ProxmoxPrevious bug: excluded vmbr0 and tried connecting through vmbr1 (which had no IP in OpenWrt's default config).
On re-runs (VM already configured), the bootstrap IP 192.168.1.1 no longer exists — the VM's LAN is on 10.10.10.1. The openwrt_vm role MUST probe the configured LAN IP first and skip bootstrap if reachable.
OpenWrt LXC containers (bridge, mesh) boot with the default LAN IP 192.168.1.1 on br-lan. On WAN-bridged hosts, this IP is on the same L2 segment as the router VM's bootstrap target. The bridge LXC role MUST override the default LAN IP to the Proxmox-assigned container IP during provisioning.
Previous bug: Bridge LXC containers on bridge-1 and bridge-2 had 192.168.1.1 on the WAN bridge. When the openwrt_vm role added 192.168.1.2/24 to vmbr0 and SSHed to 192.168.1.1, it connected to the bridge container (1 eth interface) instead of the VM (3 interfaces). The configure role then failed with "No LAN devices found."