Attila Nagy wrote: > > > the "em" driver (if "gx" is already in the initial plan), because it > > > reportedly works better (for example I couldn't do NFS serving with UDP > > > packets bigger than the MTU with that, while the "em" driver works OK). > > > > It *does* frag packets bigger than the MTU, right? > > netstat didn't show any errors regarding to that. If I used an NFS > readsize, smaller than the 1500 bytes MTU it worked (was slow, but > worked). > netstat's frag counters were increased. > I couldn't use tcpdump (I had no bpf support) to see what happens on the > wire...
Sending datagrams bigger than the MTU is a bad idea. I would be real tempted to drop the packets and send "don't fragment" ICMP responses to beat up anyone who abused UDP by sending larger than the MTU. I guess this is about Linux UDP NFS clients, in particular. -- Terry To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-net" in the body of the message
