You can install Resilio Sync on aarch64. Tested on Odroid C2, ubuntu 16.04 LTS aarch64.
Install Resilio Sync for armhf (https://help.resilio.com/hc/en-us/articles/206178924). After installing, you should have rslsync in /usr/bin/. Now you must install libc6-armhf-armel-cross.
sudo apt install libc6-armhf-armel-cross
Create a file /etc/ld.so.conf.d/libarmhf.conf add this line inside the file
/usr/arm-linux-gnueabihf/lib
Then run:
ldconfig -v
Now you must create a symbolic link in /lib. Be careful, version number can be different (ld-2.xx.so)
sudo ln -s /usr/arm-linux-gnueabihf/lib/ld-2.23.so /lib/ld-linux-armhf.so.3
Now you can start the service without error.
sudo service resilio-sync start
On dietpi v161 just install libc6:armhf
sudo apt-get install libc6:armhf
