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How to Bridge Two Ethernet Ports on Mac OS X

Fresh7 days ago
Mar 15, 202673020 views
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Problem

How can I bridge two wired ethernet interfaces on Mac OS X (e.g. the current MacPro comes with two ethernet ports)? Googling turned up (e.g. this Apple forum post and this openvpn post) that this is fairly easy on Linux (using the brctl command) and under Windows (via Network Connections > right-cl…

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Fix for: How to Bridge Two Ethernet Ports on Mac OS X

Low Risk

As of Mountain Lion, you can configure bridges using ifconfig: See for more options. It doesn't work well with wifi interfaces however due to how they handle lookups.

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Environment