We will be updating the software on the core router/switch in the William Gates Building (gatwick) in order to attempt to mitigate the ongoing crashes (https://cl.instatus.com/clvva1e4b43187b8n2hqywstc0). This upgrade cannot be performed "live", so there will be approximately 20-30 minutes' outage of the William Gates Building office network, and of filer. Other servers in GN09 should be largely unaffected.
