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I used the following command to flush the dns cache on my 12.10 ubuntu box and it worked fantastic. sudo kill -HUP $(pgrep dnsmasq) Another helpful signal is the SIGUSR1 which dump a little statistic to syslog or as it is note from man dnsmasq :
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how to flush dns of Ubuntu 12.04 LTS (GNU/Linux...
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10 Οκτ 2023 · You can flush the DNS cache on a systemd-based Linux computer with the "resolvectl flush-caches" command. If you use dnsmasq, you can clear the DNS using "sudo killall -HUP dnsmasq" instead.
25 Ιουλ 2024 · sudo: Executes the command with superuser privileges. resolvectl: The command-line client for interacting with systemd-resolved, a system service managing DNS resolution. flush-caches: Option instructing systemd-resolved to clear and refresh the DNS cache. Flushing DNS Cache using resolvectl command.
26 Ιαν 2009 · Explains how to clear DNS cache using BASH under Linux and OS X (macOS) UNIX operating systems using the CLI.
9 Ιαν 2021 · The easiest way to flush the DNS on Linux, if you are using systemd-resolved, is to use the “systemd-resolve” command followed by “–flush-caches”. Alternatively, you can use the “resolvectl” command followed by the “flush-caches” option.
9 Απρ 2023 · In this article, we provided a step-by-step guide on how to flush the DNS cache in Ubuntu and Linux Mint for various caching DNS resolvers like systemd-resolved, dnsmasq, and BIND. Additionally, we discussed how to clear the DNS cache in popular web browsers.
3 Φεβ 2024 · Flushing the DNS cache on Ubuntu with "resolvectl flush-caches" can help troubleshoot connectivity issues and improve network performance. DNS caching reduces the time it takes to return DNS requests, but outdated or corrupt entries will cause problems.