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Fixing Ping MTU Issues
Article Number: 132 | Rating: Unrated | Last Updated: Wed, Jul 9, 2025 at 11:29 PM

The first thing you need to do to fix your OpenVPN MTU problem is to figure out what your largest MTU actually is. You can do this using the ping command. “ping -f” tells ping not to fragment the packet under any circumstances. “ping -l” tells ping the packet size to use.

ping -f 1.1.1.1 -l 1500
ping -f 1.1.1.1 -l 1422
Posted by: Saeed Nobakht - Wed, Jul 9, 2025 at 11:27 PM This article has been viewed 15 times.
Filed Under: Network
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