treequell avidgrapher GrapheneOS does support Ethernet over USB-C. Here's a list of adapters which have been tested by GrapheneOS users: https://discuss.grapheneos.org/d/96-usb-c-to-ethernet-adapter-compatibility-list/3
DeletedUser115 avidgrapher Can confirm it works in both Pixel phones and the tablet. Works very well and reliable.
csis01 It should. The specific ethernet adapter has to be supported by the Linux Kernel. Most are, some aren't.
cocoriNET Hi, I made a tutorial on my website : https://www.cocorinet.com/comment-partager-la-connexion-internet-dun-telephone-vers-un-routeur