from this link
Main changes from OpenWrt 21.02.1
- Support for the following devices was added:
- Xiaomi AIoT Router AC2350
- Linksys EA6300 & EA9200
how to install for ea6300? also ea6400 is the same device according to ??
EA6300 v1 support wasn't really added with 21.02.1, it was merely re-enabled - device support has been added almost 7 years ago in https://git.openwrt.org/?p=openwrt/openwrt.git;a=commitdiff;h=c6401c6d617748f2f76cf548e525c88b9942ce98 - sadly predating the policy to describe the flashing process in the commit message.
In the absence of a device page in the wiki, you probably will have to find out the details yourself - the commits surrounding this device seem to suggest that the OpenWrt firmware might be accepted by the OEM firmware (eventually from CFE?), but there is no further information about that, or to what extent it is working (e.g. the wireless part isn't, at least not reliably, nor achieving a throughput beyond 54 MBit/s).
it is, and is flagged for moderation.