aditya kiran wrote:
Hi,
I'm just trying to understand the PMTU Discovery support
in FreeBSD. Is upward PMTU (increase in PMTU) is also
discovered when PMTU Discovery is enabled?
Thanks,
Aditya

As I understand it, it is not possible to detect upward changes in the path MTU as there is no mechanism for a router to generate an error when a packet is small enough to be accommodated by the MTU of the link to the next hop. I may be wrong though.

Tom
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