I have similar issues with the Yun Rev 2. LEDEYun 17.11 installed.
Using windows, following the steps for windows installation as per this link GitHub - aws/aws-iot-device-sdk-arduino-yun: SDK for connecting to AWS IoT from an Arduino Yún.
all the opkg install commands fail. All online suggestions I have found are not working because I suspect that they were for working the first Yun version.
For example:
opkg install distribute
fails with the following error: * opkg_install_cmd: Cannot install package distribute.
I found the following link but it does not resolve this issue:
http://www.geeetech.com/forum/viewtopic.php?p=27563&sid=4b3733618c6159f3d2612c46b071a88f
This is the content of my opkg.conf
src/gz attitude_adjustment http://downloads.arduino.cc/openwrtyun/1/packages
dest root /
dest ram /tmp
lists_dir ext /var/opkg-lists
option overlay_root /overlay
Cheers!