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DNS Name resolution fails for sub web links with Mobile Connect using Android ver-7.x
03/26/2020 
8 People found this article helpful
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Description
DNS Name resolution fails for sub web links with Mobile Connect using Android ver-7.x
This issue is with one of the customer, couple of android users were getting Name Not resolved error when they go to sub link from MyPortal resource. Sub link goes to https:// v4bpxxx.xxx.xxxxxpetroxx.com:61000/
We've added a hostname as resource and its appended in resource groups and access control is granted but still DNS fails for sub web links. This issue is with mobile connect with Android version-6.x DNS works fine, but with android version 7.x
DNS resolution fails.
Cause
DNS failed with latest Android 7.x
Snippet of mobile connect.logs
2018-02-06 17:31:57:152 INFO main - MobileConnectApplication - ================ SonicWall Mobile Connect for Android ================
2018-02-06 17:31:57:152 INFO main - MobileConnectApplication - App Version: [5.0.4]
2018-02-06 17:31:57:153 INFO main - MobileConnectApplication - Build Number: [504]
2018-02-06 17:31:57:153 INFO main - MobileConnectApplication - ================ Device Information ==================================
2018-02-06 17:31:57:154 INFO main - MobileConnectApplication - Manufacturer: [Xiaomi]
2018-02-06 17:31:57:154 INFO main - MobileConnectApplication - Brand: [xiaomi]
2018-02-06 17:31:57:155 INFO main - MobileConnectApplication - Model: [Redmi Note 4]
2018-02-06 17:31:57:155 INFO main - MobileConnectApplication - Device: [mido]
2018-02-06 17:31:57:156 INFO main - MobileConnectApplication - Android Version: [7.0]
2018-02-06 17:31:57:156 INFO main - MobileConnectApplication - Build Number: [NRD90M]
2018-02-06 17:31:57:156 INFO main - MobileConnectApplication - SDK: [24]
2018-02-06 17:31:57:157 INFO main - MobileConnectApplication - Architecture: [arm64-v8a, armeabi-v7a, armeabi]
2018-02-06 17:31:57:157 INFO main - MobileConnectApplication - Total Memory: [65446280 bytes]
2018-02-06 17:31:57:158 INFO main - MobileConnectApplication - Free Memory: [2493232 bytes]
Resolution
This is by design Mobile for All Mobile Connect we to need to add IP address (either subnet range/ IP Range or IP address) as resource and grant permissoins else resource access won't work since MC does not support DNS routing.
ISSUE ID:
198950
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