I'm looking to test out this unit as my primary router but I want to make sure to sinkhole all the phone home links. So far I've identified the below hostnames and changed the hostnames in uci to an invalid hostname to prevent all the cross-site URL's Xiaomi appears to be using to phone home activity just by browsing the admin site. Any additional thoughts here besides just using /etc/hosts (besides using a FW or Pihole - my Pi is off in a K8s cluster right now).
root@XiaoQiang:~# cat /etc/hosts
127.0.0.1 localhost
::1 localhost ip6-localhost ip6-loopback
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
0.0.0.0 baidu.com taobao.com xiaomi.cn xiaomi.com
0.0.0.0 www.baidu.com www.taobao.com www.xiaomi.cn www.xiaomi.com
::1 baidu.com taobao.com xiaomi.cn xiaomi.com
::1 www.baidu.com www.taobao.com www.xiaomi.cn www.xiaomi.com
0.0.0.0 miwifi.com log.miwifi.com s.miwifi.com app.miwifi.com stun.miwifi.com broker.miwifi.com
::1 miwifi.com log.miwifi.com s.miwifi.com app.miwifi.com stun.miwifi.com broker.miwifi.com
0.0.0.0 bbs.xiaomi.cn bbs.xiaomi.com
::1 bbs.xiaomi.cn bbs.xiaomi.com