An OpenVPN log entry says "Note: unable to redirect default gateway -- Cannot read current default gateway from system"

Last updated by Shayne M on September 23, 2017 12:42

There is a problem (in OS X and/or OpenVPN) which causes OpenVPN to be unable to read the default gateway when you try to connect OpenVPN through an existing PPP connection; here is a workaround:

Create a ppp start-up script /etc/ppp/ip-up and add the following:

gw=`ifconfig ppp0|grep inet| awk '{ print $4 }'`
route change default $gw -ifscope ppp0

Save the script and make it executable running chmod a+x /etc/ppp/ip-up.

Please note that the above script was made for interface ppp0. If for any reason you have more/other, make the changes accordingly.

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