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Guides from the NOC

Written from running the hardware — what breaks, why, and the command that fixes it.

5 posts matching “networking” · Clear

All 5 Most read Troubleshooting 3 VPS 2
Troubleshooting DNS_PROBE_FINISHED_NO_INTERNET: Causes and the Fix

Chrome could not reach any DNS server at all. That usually means the connection is down - but not always, and the exception is worth knowing.

31 August 2026 · 4 min · 4 views Troubleshooting ERR_NETWORK_CHANGED: Causes and the Fix

Chrome aborts a request when the network changes mid-flight. Usually harmless, sometimes a symptom - here is how to tell which, and how to stop it happening.

31 August 2026 · 4 min · 5 views Troubleshooting ERR_ADDRESS_UNREACHABLE: Causes and the Fix

Chrome says the address is unreachable when the network cannot get a packet to that IP at all. Here is how to tell a stale DNS record from a routing problem.

31 August 2026 · 5 min · 5 views VPS How to Enable IPv6 on Your VPS Without Breaking SSH

Adding IPv6 to your VPS? Learn how to configure netplan, UFW/ip6tables, and SSH the right way so IPv6 works without locking you out or breaking IPv4.

5 August 2026 · 6 min · 4 views VPS VPS Lost Network After a Netplan Edit? Fix Static IP Config

VPS dropped off the network after a netplan edit? Learn the common YAML mistakes, how to recover access via console, and set a static IP correctly.

27 July 2026 · 5 min · 3 views