Paul Durrant writes: > Pradeep writes: > > I am presently developing a GLDv3 complaint Network driver , > > iam facing a strange problem when a do a ftp and ping together iam seeing > > following warning message in the ping program. > > ICMP Fragmentation needed and DF set from gateway 178.122.70.9 > > for tcp from 178.122.70.9 to 178.122.70.56 port 34234 > > A classic reason for this would be if the stack were sending down LSO > packets to your driver but your driver/hardware were not fragmenting > them down to MTU size packets. I.e. you really are sending 64k (or > whatever LSO limit you have) packets out on the wire.
How could that be the reason? The source address on the ICMP message above is the same as the sender's address. That pegs it as an ICMP message generated within the local TCP/IP stack itself, which means the packet didn't get anywhere near the driver. -- James Carlson, Solaris Networking <[EMAIL PROTECTED]> Sun Microsystems / 35 Network Drive 71.232W Vox +1 781 442 2084 MS UBUR02-212 / Burlington MA 01803-2757 42.496N Fax +1 781 442 1677 _______________________________________________ networking-discuss mailing list [email protected]
