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I just upgraded my kernel to 2.6.20 (or later) and my bridge/firewall stopped working. What is wrong?

April 26, 2017bridge firewall Kernel later stopped upgraded working wrong

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I just upgraded my kernel to 2.6.20 (or later) and my bridge/firewall stopped working. What is wrong?

1 Answer

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In kernel 2.6.20, the Netfilter physdev match feature was changed such that it is no longer capable of matching the output device of non-bridged traffic.