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ap: parallel 2.4GHz AP (hostapd-2g) on the Linksys WUSB6300v2 dongle

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Second radio (wlxd8ec5e2faa8c, RTL8822BU/rtw88), same VanLink SSID+PSK,
ch6 HT20, bridged into br0 next to the 5GHz AP. Runs as its own hostapd
instance + own watchdog so a USB wedge on one radio never darkens the
other; van-ap-watchdog now takes conf path + unit name as args (defaults
unchanged). rtw88.conf disables deep power-save (rtw89 gotcha analog)
and the driver's USB2->3 self-upgrade (USB3 noise in the 2.4GHz band —
note: dongle currently sits in a USB3 port, so it still enumerates
SuperSpeed; move to a USB2 port if 2.4GHz range disappoints).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This commit is contained in:
Andreas Wrede
2026-07-06 10:03:16 -04:00
co-authored by Claude Fable 5
parent a7819edbc2
commit e652b0f7bd
9 changed files with 106 additions and 17 deletions
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deploy.sh
+9 -4
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@@ -13,6 +13,11 @@ install -D -m0644 ap/hostapd-restart.conf /etc/systemd/system/hostapd.service.
install -D -m0644 ap/default-hostapd /etc/default/hostapd
install -D -m0755 ap/van-ap-watchdog /usr/local/sbin/van-ap-watchdog
install -D -m0644 ap/van-ap-watchdog.service /etc/systemd/system/van-ap-watchdog.service
install -D -m0644 ap/hostapd-2g.conf /etc/hostapd/hostapd-2g.conf
install -D -m0644 ap/hostapd-2g.service /etc/systemd/system/hostapd-2g.service
install -D -m0644 ap/11-van-ap-2g.network /etc/systemd/network/11-van-ap-2g.network
install -D -m0644 ap/van-ap-watchdog-2g.service /etc/systemd/system/van-ap-watchdog-2g.service
install -D -m0644 ap/rtw88.conf /etc/modprobe.d/rtw88.conf
install -D -m0644 ap/van-ap-dnsmasq.conf /etc/van-ap/dnsmasq.conf
install -D -m0644 ap/van-ap-dnsmasq.service /etc/systemd/system/van-ap-dnsmasq.service
install -D -m0644 ap/10-van-ap.network /etc/systemd/network/10-van-ap.network
@@ -85,7 +90,7 @@ systemctl mask systemd-networkd-wait-online.service >/dev/null 2>&1 || true
# pick up the lid drop-in (re-execs logind; does NOT drop the network)
systemctl restart systemd-logind >/dev/null 2>&1 || true
systemctl unmask hostapd >/dev/null 2>&1 || true
systemctl enable regdomain.service hostapd van-ap-dnsmasq nftables systemd-networkd van-failover van-thermal van-battery van-ap-watchdog >/dev/null 2>&1 || true
systemctl enable regdomain.service hostapd hostapd-2g van-ap-dnsmasq nftables systemd-networkd van-failover van-thermal van-battery van-ap-watchdog van-ap-watchdog-2g >/dev/null 2>&1 || true
systemctl restart van-thermal van-battery
# Heartbeat: only enable/start once the client binary is installed (README §4).
if [ -x /home/andreas/bin/hbc ]; then
@@ -98,9 +103,9 @@ nmcli general reload 2>/dev/null || systemctl reload NetworkManager 2>/dev/null
# restart in dependency order: br0 + AP iface + LAN member first, then hostapd adds
# the wlan to br0, then dnsmasq binds br0, then NAT/failover
systemctl restart systemd-networkd
systemctl restart hostapd van-ap-dnsmasq nftables van-failover
# AP watchdog last, after hostapd is back up (it only ever restarts a wedged hostapd)
systemctl restart van-ap-watchdog
systemctl restart hostapd hostapd-2g van-ap-dnsmasq nftables van-failover
# AP watchdogs last, after hostapd is back up (they only ever restart a wedged hostapd)
systemctl restart van-ap-watchdog van-ap-watchdog-2g
networkctl reload 2>/dev/null || true
echo