Reply To: ASUS – DSL-AC88U / DSL-AC3100 Firmwares (beta's) etc. Looks like a new Beta Release for the DSL-AC88U is available, this version has Telnet enabled and improved 2.4GHz wifi (I believe). DSL-AC88U_v9.10.06_build581_debug.w.zip https://www.asuswebstorage.com/navigate/s/604D61534F2541D1B3CE1CC031A697E4Y UK Sentinel In a completely…

[UK Sentinel]

A two part response ;-)

I cannot recall what ASUS router you have, but should be able to change MTU value by…..

• Click [WAN].
• Select [PPPoE] under the path below: Internet Connection >> Basic Config >> WAN Connection Type.
• You can change the value of MTU(Maximum Transmission Unit) under Account Setting.

IPv6 MTU size is very specific to your setup i.e  if you are running an IPv6/IPv4 DualStack, ISP requirements (6in4 encapsulation) etc. I know ASUS used to default to 1300 MTU but believe MTU is now around 1492 for IPv6.

BTW – All IPv6 networks must support an MTU size of 1280 bytes or greater (RFC 2460) and when RFC 8200 came out the same MTU value 1280 remained (I believe) .  tweaking is strongly advised if you are experiencing problems with certain websites/connections etc.  1500 is considered most efficient but in reality a lower value is advisable.

Let us know what ASUS router you have and what your MTU is set at when you next decide to see (test) if IPv6 works for you?

 

 

 

 

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In a completely sane world, madness is the only freedom (J.G.Ballard).

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