144 lines
4.8 KiB
YAML
144 lines
4.8 KiB
YAML
---
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# Network layout:
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# MikroTik ether3 ↔ dlink WAN port (switch0 port4)
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# MikroTik sends MGMT traffic untagged, vlan2/vlan5/vlan6 tagged.
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#
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# switch0 VLAN table:
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# VLAN 1 (MGMT): CPU(6) tagged, WAN(4) untagged → eth0.1 → mgmt
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# VLAN 2 (LAN): CPU(6) tagged, WAN(4) tagged, LAN1-4(0-3) untagged → eth0.2 → br-lan → lan
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# VLAN 5 (IOT): CPU(6) tagged, WAN(4) tagged → eth0.5 → br-iot → iot
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# VLAN 6 (UPLINK): CPU(6) tagged, WAN(4) tagged → eth0.6 → uplink
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#
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# Interfaces:
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# mgmt — static 192.168.255.11/24 on eth0.1, management
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# lan — bridge (br-lan) on eth0.2, LAN clients via LAN ports
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# iot — bridge (br-iot) on eth0.5, IoT clients via wifi only
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# uplink — static 192.168.6.2/24 + 2001:470:61a3:600::2/64 on eth0.6, internet access for opkg
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- name: Configure network
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community.openwrt.uci:
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command: import
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merge: false
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config: network
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value: |
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package network
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config interface 'loopback'
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option device 'lo'
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option proto 'static'
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list ipaddr '127.0.0.1/8'
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config globals 'globals'
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option ula_prefix 'fd4d:508e:899a::/48'
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config switch
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option name 'switch0'
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option reset '1'
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option enable_vlan '1'
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config switch_vlan
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option device 'switch0'
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option vlan '1'
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option vid '1'
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option description 'mgmt'
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option ports '4 6t'
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config switch_vlan
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option device 'switch0'
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option vlan '2'
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option vid '2'
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option description 'lan'
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option ports '0 1 2 3 4t 6t'
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config switch_vlan
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option device 'switch0'
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option vlan '5'
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option vid '5'
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option description 'iot'
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option ports '4t 6t'
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config switch_vlan
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option device 'switch0'
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option vlan '6'
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option vid '6'
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option description 'uplink'
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option ports '4t 6t'
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config device
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option name 'br-lan'
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option type 'bridge'
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list ports 'eth0.2'
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config interface 'mgmt'
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option device 'eth0.1'
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option proto 'static'
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option ipaddr '{{ openwrt_mgmt_ip }}/{{ openwrt_mgmt_prefix }}'
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option dns '{{ openwrt_dns_servers | join(" ") }}'
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# Policy routing for mgmt interface.
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#
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# Without this, replies to traffic destined for 192.168.255.11 (mgmt IP)
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# would be sent via the default route (eth0.6/uplink, src 192.168.6.2)
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# instead of back through eth0.1. This is because mgmt clients (e.g. PCs
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# on 192.168.0.0/24) are not on the directly connected 192.168.255.0/24
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# subnet — they reach 192.168.255.11 via MikroTik routing, so the kernel
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# has no connected route matching the reply destination and falls back to
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# the default route, causing asymmetric routing.
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#
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# ip4table cannot be used here — it generates rules matching only the
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# interface IP (from 192.168.255.11) and destination (to 192.168.255.11/24),
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# not the source subnet needed for return traffic from arbitrary clients.
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# Instead we manually add a rule matching any traffic sourced from the mgmt
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# subnet and a default route in table 100 via the MikroTik mgmt gateway.
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# Same-subnet traffic (src and dst both in 192.168.255.0/24) must stay in
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# main table so replies go directly out eth0.1 without being redirected.
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# Priority 500 ensures this fires before the catch-all rule below (1000).
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config rule
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option src '192.168.255.0/24'
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option dest '192.168.255.0/24'
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option lookup 'main'
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option priority '500'
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# All other traffic sourced from 192.168.255.0/24 (i.e. replies to clients
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# outside this subnet, routed via MikroTik) uses table 100 which has a
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# default route back via eth0.1 to prevent asymmetric routing.
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config rule
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option src '192.168.255.0/24'
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option lookup '100'
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option priority '1000'
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config route
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option table '100'
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option interface 'mgmt'
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option target '0.0.0.0/0'
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option gateway '{{ openwrt_mgmt_gateway }}'
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config interface 'lan'
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option device 'br-lan'
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option proto 'none'
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config device
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option name 'br-iot'
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option type 'bridge'
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list ports 'eth0.5'
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config interface 'iot'
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option device 'br-iot'
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option proto 'none'
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config interface 'uplink'
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option device 'eth0.6'
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option proto 'static'
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option ipaddr '192.168.6.2/24'
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option gateway '192.168.6.1'
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option dns '192.168.6.1'
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option ip6addr '2001:470:61a3:600::2/64'
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option ip6gw '2001:470:61a3:600::1'
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notify: Reload network
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- name: Commit network config
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community.openwrt.uci:
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command: commit
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key: network
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