I tried to reproduce the problem with a similar setup: XP guest via Linux host (with MTU 1492) to OS X machine with Windows shares. Writing to the Windows shared folders produces packets of 1506 bytes, so everything works as it should. Could you restore back the smaller MTU on your Linux host and try 'ping -f -l 1472 <ip_addr_of_win_share_machine>' from W2K guest? You should get something like this:
Pinging 10.88.1.2 with 1472 bytes of data: Reply from 192.168.100.100: Packet needs to be fragmented but DF set. Packet needs to be fragmented but DF set. Packet needs to be fragmented but DF set. Packet needs to be fragmented but DF set. If there are no replies at all then, most probably, your Linux host acts as a "black hole" router which prevents proper path MTU discovery. Best regards, Aleksey _______________________________________________ vbox-users mailing list vbox-users@virtualbox.org http://vbox.innotek.de/mailman/listinfo/vbox-users
