DNS not correct resolved intermittent on Android Oreo

C Christian Pollak 3 years 7 months ago
80 1 0

Hello
need to get file from local store server - local store server given via DHCP via Primary DNS, Secondary DNS provided for backup if local store server not operating
system works for years with Windows CE (MC32)
now moving to TC51 (02-13-15.00-ON-U19-STD)
https://developer.android.com/reference/java/net/HttpURLConnection is used to request the file
sometimes not the Primary DNS is contacted by the device but the secondary DNS - although primary dns is available
sometimes can not really be defined :
- maybe after a restart of device it works ok again,
- or two restarts
- or there are devices which never show the issue
- or there are stores which have not this issue with all of their devices
also using Chrome Browser it will not resolve the primary dns correct
but when starting worryfree-wifi and do a ping to the DNS Name it will immediately return the correct IP Adress
and AFTER doing ping in worryfree wifi also it is correct resolved inside the app and with the Chrome Browser
in WLAN Info the order of DNS is always given correct.
any ideas are very much welcome !
thx, Christian

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1 Replies

R Rabeb Othmani

Hi Christian, 
Could you please specify if other devices also behave in the same way? Did the device work normally before? 
If you please can provide any details to be able to reproduce the issue. Thanks! 

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