As others stated, you don't need to reboot. Just run `service network restart` even if connected via SSH. Of course, if the file or other network settings get messed up, you will need to have someone access the server locally to fix it assuming you don't have KVM over IP, DRAC, or other remote access method setup.
Judging from older threads, I believe he has this server near him locally. Correct me if I am wrong.
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