On 01/04/2018 05:34 PM, Carlos E. R. wrote:
With path MTU discovery, the packet size is automatically adjusted to accommodate smaller MTUs. It does this by a router sending a "too big" ICMP message back to the source, with the recommended MTU. Linux appears to use it for all traffic, but Window for TCP only. Of course, with IPv6, PMTUD is mandatory. Interesting.
https://en.wikipedia.org/wiki/Path_MTU_Discovery
The 1472 figure rings a fuzzy bell with old modems. :-?
I remember 576 from the dial up modem days and 1492 for ADSL. I don't ever recall hearing 1472 until now. Maybe I got the figure wrong.
Perhaps it was 1492, as that is the usual for PPPoE, which is used for ADSL. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org