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Author Topic: IPV6 6to4 MTU tunnel setting on Asus router  (Read 1205 times)

burakkucat

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Re: IPV6 6to4 MTU tunnel setting on Asus router
« Reply #15 on: April 03, 2020, 11:10:34 PM »

So do I add 28 for optimal tunnel size which would be 1452, oh my that's what Weaver said lol

It looks that way and, yes, so he did!  :D
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Weaver

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Re: IPV6 6to4 MTU tunnel setting on Asus router
« Reply #16 on: April 05, 2020, 06:51:41 AM »

 :-[ I must be going mad. When I said 40 bytes back their I should have said 20. My apologies

An IPv4 proto 41 tunnel, used to encapsulate IPv6, adds an IPv4 header to the start of an IPv6 packet. The IPv4 header is 20 bytes, so the tunnel payload, the IPv6 PDU, will have an MTU that is reduced by 20 bytes compared with the normal IPv6 PDU MTU.

So given my stupidity, I donít have an explanation for the numbers youíre getting. You do indeed add on 28, as you said,
« Last Edit: April 05, 2020, 07:18:19 AM by Weaver »
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