>> OK, does PMTUD lower the outgoing packet size on my system due to the >> hotel router's lower MTU or does the hotel router itself fragment my >> 1500 byte packets in order to send them out? Just curious. > > If you are sending out packets with the DF bit set no fragmentation will take > place - the packet is dropped and an appropriate message is returned to > sender. Otherwise the router will fragment them and send them on to the > recipient address.
Shouldn't PMTUD change my MTU based on the hotel router's lower MTU? - Grant
