Source: Firmware openwrt-ar750s-3.201-0402.tar, possible still same DNS leak or again - #32 by Willist
“Based on openwrt 19.07.7
…
Important bugfix:
…
3. Fixed DNS leakage BUG when using CloudFlare after connecting to OpenVPN”
Source: Source: https://dl.gl-inet.com/firmware/snapshots/3.203_beta4/ar750s/ReleaseNote.txt