大家不如睇下我#128嘅分析啦,好有可能係Samsung hard code咗114落fallback DNS,喺所有已經派咗嘅DNS都access唔到嘅時候,就偷偷哋用呢個hard code咗嘅114 DNS嚟resolve domain name
One Plus一早有人發現呢個問題,只係hard code咗8.8.8.8大家當冇時發生咁解。其實Google DNS都唔係啲咩好嘢,只係件事由被114變咗被8.8.8.8
Refernece:
https://forums.oneplus.com/threads/secondary-dns-forced-to-8-8-8-8.999920/
另外樓上有人話app可以拎permission去改network setting,其實係唔啱,DNS setting呢個其實已經係system setting,正路唔會咁輕易喺冇通知User嘅時間硬加114落去,呢個情況好有可能係喺寫ROM嘅時候畀Samsung加咗114做fallback DNS
所以最有效去睇有冇被hard code 114,就係將電話同router嘅所有DNS Setting轉dummy ip,令到全個network嘅domain name query失效,喺呢個情況下,假如電話仲可以用domain name上到網(例如
dnsleaktest.com),就即係電話暗中用佢嘅方法幫你搵咗DNS去resolve domain name,順便做一次dnsleaktest就知你被DNS咗去咩server