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I upgraded to OS X 10.7 this morning and upon attempting to connect to my corporate VPN, I discovered that my script at /etc/ppp/ip-up has disappeared. Has anyone else encountered this problem, or do you know where it might have ended up?

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If you grab a copy from your backup, does it still work for you? – bmike Jul 20 '11 at 21:33
I'm ashamed to say that I made major changes to the file since my last backup and didn't back up prior to the upgrade. – Ryan Tenney Jul 20 '11 at 21:38
Oh no! Yikes - at lest you know a little about changing it. I feel a little bad for asking - hope it gets sorted out for you or someone here has a copy they can share. I would try entering anything in VPN software and see if it still creates a new script that you can start with. – bmike Jul 20 '11 at 21:48
Still happening in Yosemite - upgrading from 10.10.0 to 10.10.1 nuked mine (again) – CupawnTae Dec 2 '14 at 14:32
up vote 3 down vote accepted

It very likely got overwritten. The upgrade does nothing to back up what it considers "system files" and simply overwrites them with the latest version.

Another good reason to do a full backup before upgrading.

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