Pixel3 WiFi 感叹号

adb shell settings delete global captive_portal_http_url
adb shell settings delete global captive_portal_https_url
adb shell settings put global captive_portal_http_url http://www.google.cn/generate_204
adb shell settings put global captive_portal_https_url https://www.google.cn/generate_204

切为飞行模式，再切换回来。