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Help us understand the problem. What is going on with this article?

macのネイティブクライアントでvpn(PPTP)で繋がらない、すぐに切断されてしまう場合

More than 5 years have passed since last update.

mtu値がデフォルト値(自分の環境では1500)だと
高いケースがあるので下げる。

sudo /sbin/ifconfig en0 mtu 1300

自分の場合はこれでOKでした。

http://secure.switchkonnect.com/knowledgebase/35/Frequent-disconnects-Unable-to-browse---PPTP-MTU-Issue---MacOSX.html

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