Add travel-router/README.md

travel-router/README.md

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+cat > /root/README-no-rrm.txt <<'EOF'
+Wi-Fi uplink fix.
+
+Problem:
+Upstream AP sends 802.11k/RRM Beacon Measurement Requests.
+wpa_supplicant responds by triggering a full 2.4 GHz scan.
+On MT7981 this scan lasts ~6.5 seconds and causes packet loss.
+
+Fix:
+Add driver_param=no_rrm=1 to wpa_supplicant interface configuration.
+
+Modified file:
+/usr/share/ucode/wifi/supplicant.uc
+
+Added:
+interface.config.driver_param = "no_rrm=1";
+
+And added driver_param to:
+append_vars(interface.config, [ 'country', 'beacon_int', 'freq_list', 'driver_param' ]);
+
+After OpenWrt/package upgrades verify:
+grep driver_param /var/run/wpa-supplicant-phy0-sta0.conf
+
+Expected:
+driver_param=no_rrm=1
+EOF