Recently, I met a wired issue when starting Baxter. The login interface of the screen showed: (none).unkown_domin. When I logged in with the username (ruser) and password, the hostname is none and thus no ip address. But the ect/hosts has the correct configuration information. I tried to update/change the hostname, it failed and told me I don't have root right to do it. I also tried all the method from google but all failed. It seems the operation system of baxter has problems. Do anyone have some advice on the issue?