Andreas WredeandClaude Sonnet 5
6d5184e2e7
van-failover is now the sole owner of default-route selection: netplan/NM profiles get ipv4.never-default so NM's own DHCP/lease renewals stop reinstalling competing default routes (was racing van-failover's enforce_route on Starlink's 16s lease). set_profile_metric() also pins never-default on NM-managed connections it doesn't own the netplan source for (e.g. cellular), and nm_gateway() falls back to the raw DHCP4 lease's `routers` option since NM stops populating IP4.GATEWAY once never-default is set. Probing moved from one shared round to independent per-WAN retry scheduling, so a flaky WAN retries on its own clock instead of dragging healthy WANs into extra probes or throttling a failing one to the slow steady-state cadence. config.json: probe_interval 4->60, fail/ok_threshold 3/2->2/1, single probe URL — verified live across this reboot (cellular took ~2min after NM reported "activated" to actually pass traffic; van-failover correctly withheld/ deprioritized the default route until then, then installed it automatically). Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
59 lines
2.8 KiB
YAML
59 lines
2.8 KiB
YAML
# /etc/netplan/50-van-wan.yaml — replaces cloud-init's 50-cloud-init.yaml.
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# The WANs handed to NetworkManager so van-failover can steer them (mirrors
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# wayback where NM owns all WANs): wlan0 = wifi uplink (Wapana at home /
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# campsite wifi), enxd8ec5eeb3512 = Starlink. The AP radios and the wired LAN
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# ports (USB dongle + onboard eth0, since 2026-07-12 an internal LAN port) are
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# deliberately absent: systemd-networkd/hostapd own them, and
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# van-ap-unmanaged.conf hides them from NM.
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# Apply once by hand: netplan generate && netplan apply (flaps the uplinks).
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network:
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version: 2
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ethernets:
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# Starlink dish uplink (RTL8153 USB NIC, MAC-named — travels with the
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# adapter, see STARLINK_IFACE in deploy.conf). The /32 link route keeps the
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# dish's management address reachable no matter which WAN holds the
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# default route: the dish answers on 192.168.100.1 (gRPC :9200) even while
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# the uplink sits behind CGNAT.
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@STARLINK_IFACE@:
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renderer: NetworkManager
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optional: true
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dhcp4: true
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routes:
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- to: 192.168.100.1/32
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scope: link
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# never-default: van-failover is the sole owner of the default route (it manages it
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# directly via `ip route`, deliberately never `nmcli device reapply`d — that resets
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# r8152 USB-ethernet carriers). Without this, NM's own DHCP client reinstalls its own
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# default route (metric 100, NM's ethernet default) on every lease renewal — observed
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# every ~8s here (dish hands out a 16s lease) — which van-failover's loop prunes within
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# ~1s, but during that window it can tie wifi's own healthy base metric (also 100).
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# Setting this at connection-creation time (vs. a live `nmcli modify`, which does NOT
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# take effect on an already-active connection without a reactivation) closes the race
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# for good.
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networkmanager:
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passthrough:
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ipv4.never-default: "true"
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wifis:
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wlan0:
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renderer: NetworkManager
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optional: true
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dhcp4: true
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# IPv6 is deliberate as of 2026-07-12: NM does SLAAC/DHCPv6 itself.
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# Before this it only worked by accident — dracut's runtime catch-all
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# /run/systemd/network/zzzz-dracut-default.network had networkd
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# co-managing wlan0 (second DHCPv4 client + surprise IPv6); deploy.sh
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# now masks that file. Privacy (temporary) addresses stay off so hbd
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# and DNS see one stable source address per uplink.
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dhcp6: true
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ipv6-privacy: false
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# never-default: see the Starlink stanza above — same reasoning, applies to every
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# van-failover-managed WAN.
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networkmanager:
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passthrough:
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ipv4.never-default: "true"
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access-points:
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"Wapana":
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auth:
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key-management: "psk"
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password: "6e1335fd97165a7d2618bec19824be363a2766d7765f91aa14773d871eaa59dc"
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