> > when this message appears, ne2000 PCI client side
>
> rochebonne# fgrep 55 /usr/include/sys/errno.h
> #define ENOBUFS         55              /* No buffer space available */
>
> You're running out of mbufs, increase NMBCLUSTERS in kernel config file.

is it too small for 10Mbps network with one nfs client?
kern.mbuf.nmbclusters = 1024