Thursday, December 06, 2007

OS X 10.4 - Set Airport MTU based on Network Location

This is the script I used to set the Airport MTU in OS 10.4. In Leopard there doesn't seem to be a need to tweak your MTU settings for those finicky PPPoE DSL connections anymore.

The script is based on a post from Mac OSX Hints and TECH.inhelsinki.nl.

~/Library/LaunchAgents/LocationChanger.plist:



"http://www.apple.com/DTDs/PropertyList-1.0.dtd">


Label
tech.inhelsinki.nl.locationchanger
ProgramArguments

/Users/Applications/airport-mtu

WatchPaths

/Library/Preferences/SystemConfiguration





airport-mtu:

#!/bin/bash

echo "***Setting airport mtu 1492" >> /var/log/system.log
/sbin/ifconfig en1 mtu 1492
echo "***Airport mtu set" >> /var/log/system.log
echo "***Unloading mtu.plist" >> /var/log/system.log
/bin/launchctl unload /System/Library/LaunchDaemons/mtu.plist
exit 0

Labels: Airport Location, Apple Mac OS X Tiger, Network Location Script, Set Airport MTU

Article Link posted by Edward at 7:21 PM

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