cesaryanez@myrealbox.com said:
> net_open: server path: /export/mutt/root
> net_open: file name: pxeboot_ia32.bin
> open netbsd: No such file or directory 

It seems that the client tries to load a file "pxeboot_ia32.bin"
from the NFS root as kernel.
I see 3 ways to fix it:
1. (easy, but not very flexible) Put "netbsd" as filename
   into "dhcpd.conf" and symlink "pxeboot_ia32.bin" to "netbsd"
   on your TFTP server.
2. Tell the DHCP server to pass "pxeboot_ia32.bin" to the ROM
   only, and "netbsd" to the second stage loader:
         if substring (option vendor-class-identifier, 0, 9) = "PXEClient" {
             filename "pxeboot_ia32.bin";
         } else {
             option root-path "/export/mutt/root";
             filename "nfs:netbsd";
         }
3. Use a "pxeboot_ia32.bin" from -current (which ignores filenames
   not starting with either "nfs:" or "tftp:").

best regards
Matthias