Understood - thank you. So DF provokes the detection of the weakest link
for MTU discovery.
So a bit of digging and development is necessary if I wish to have that
option available in the luci GUI. Complex?
The weird thing in this setup is that the IPv4 PMTU is 1480 all the way.
It's
On 11/4/21 11:52 AM, Paul D wrote:
Having a bit of IPv6 6in4 problem. I set a static MTU to 1480 locally
and remotely (HE tunnel).
As I interpret the RFC [1] as referenced by overarching RFC [2], it
notes:
> When using the static tunnel MTU, the Don't Fragment bit MUST NOT be
> set in
Clarification: I ping6 the next ipv6 hop after my 6in4 tunnel, to rule
out PMTU being at fault.
On 2021-11-04 16:52, Paul D wrote:
Having a bit of IPv6 6in4 problem. I set a static MTU to 1480 locally
and remotely (HE tunnel).
___
openwrt-devel
Having a bit of IPv6 6in4 problem. I set a static MTU to 1480 locally
and remotely (HE tunnel).
As I interpret the RFC [1] as referenced by overarching RFC [2], it notes:
> When using the static tunnel MTU, the Don't Fragment bit MUST NOT be
> set in the encapsulating IPv4 header. As a
