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Author Topic: Hurricane Electric - 6in4 MTU on HENETv6 Interface  (Read 197 times)

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Offline thehammer86

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Hurricane Electric - 6in4 MTU on HENETv6 Interface
« on: October 31, 2017, 12:12:45 pm »
Just looking for clarification on the optimical MTU for the HE 6in4 tunnel interface in pfSense.  I have a DSL connection so I would think that I would need to drop the MTU at the HE side config from 1480 to 1472.  Would I also set the HENETv6 interface in pfSense to 1472 as well?

Offline bimmerdriver

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Re: Hurricane Electric - 6in4 MTU on HENETv6 Interface
« Reply #1 on: November 05, 2017, 11:34:12 am »
The MTU should be set to match the tunnel, but there is an open bug about this: https://redmine.pfsense.org/issues/8049

Offline Napsterbater

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Re: Hurricane Electric - 6in4 MTU on HENETv6 Interface
« Reply #2 on: November 14, 2017, 04:46:47 pm »
Just looking for clarification on the optimical MTU for the HE 6in4 tunnel interface in pfSense.  I have a DSL connection so I would think that I would need to drop the MTU at the HE side config from 1480 to 1472.  Would I also set the HENETv6 interface in pfSense to 1472 as well?
If your IPv4 MTU is 1492, then your 6in4 is 1472, You can set it on the interface in pfSense and then also set it on https://tunnelbroker.net/ under the advanced tab of the affected tunnel.