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TTL and MTU for 6in4 tunnel

Started by bakaekze, October 25, 2016, 11:10:16 AM

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bakaekze

Hello, what should I set TTL and MTU to for 6in4 tunnel on my ASUS RT-AC66U router?

cholzhauer

You normally don't need to change anything unless you experience issues.

Then, MTU is not dependent on your router selection, neither is TTL.

bakaekze

Which are default values then?  :P

maltacourt

MTU is on Advanced tab of your tunnel details = 1480.

bakaekze

That's what I set it to. But what about TTL?

polternet

TTL is used to prevent things like route loops or for putting a limit on the "network distance" you want your traffic to follow. Most OSs have a reasonable default:

https://en.wikipedia.org/wiki/Time_to_live

If you HAVE to set something, try 64. It should be fine unless you live somewhere with a VERY convoluted connectivity to the rest of the world.

Dan