DF bit is needed to discover the MTU on the application level, exactly
because MTU discovery can be broken on lower levels of the network stack.
QUIC specifies this procedure here:
https://tools.ietf.org/html/draft-ietf-quic-transport-05#page-53
On Saturday, April 24, 2021 at 1:37:26 PM UTC-7 i
I'm curious, why do you need to set DF bit? I'm asking, because as a
network engineer I'm often experiencing broken apps with this setting. It
usually ends up network pointing to app and vice versa.
New tunnel along the path, either GRE or IPSec is lowering MTU, new
technologies like Cisco SD-WA
