That's right.  Finally got rarpd/rpc.bootparamd/tftpd/mountd configured
correctly (whoever dreamed this up is _crazy_).  Notes at bottom.


Stage 1:


# more /etc/ethers
8:0:20:a2:77:49 ultrashit

# grep -i rarpd /etc/rc.conf
rarpd=YES               rarpd_flags="-a"

works:

Oct  3 11:18:54 regret rarpd[190]: received packet on le0
Oct  3 11:19:26 regret rarpd[190]: received packet on le0


Stage 2:

-----

# grep -i tftp /etc/inetd.conf
tftp  dgram udp   wait    root    /usr/libexec/tftpd tftpd -l -s /tftpboot

# ls -la /tftpboot/
total 144
drwxr-xr-x   2 root  wheel    512 Oct  2 23:07 .
drwxr-xr-x  18 root  wheel    512 Oct  3 01:26 ..
lrwxr-xr-x   1 root  wheel     11 Oct  2 23:07 C0A80065 -> ofwboot.net
-rw-r--r--   1 root  wheel  71085 Aug 23 05:57 ofwboot.net

works:

Oct 3 16:48:03 regret tftpd[27256]: 192.168.0.101: read request for C0A80065: success


Stage 3:

---------------

# more /etc/bootparams
ultrashit       root=192.168.0.100:/usr/share/sparc64boot

# grep -i bootparam /etc/rc.conf
bootparamd=YES          bootparamd_flags="-s"

works:

Oct  3 12:01:15 regret rpc.bootparamd: whoami got question for
192.168.0.101
Oct  3 12:01:15 regret rpc.bootparamd: This is host ultrashit
Oct  3 12:01:15 regret rpc.bootparamd: Returning ultrashit       127.0.0.1
Oct  3 12:01:15 regret rpc.bootparamd: getfile got question for
"ultrashit" and file "root"
Oct  3 12:01:15 regret rpc.bootparamd: returning server:192.168.0.100
path:/usr/share/sparc64boot address: 192.168.0.100


-------------------------

Stage 4:


# grep -i nfs /etc/rc.conf
# NFS daemons and parameters
nfs_client=YES                                  # enable client daemons
                        nfsiod_flags="-n 4"
nfs_server=YES                                  # enable server daemons
                        nfsd_flags="-tun 4"

# more /etc/exports
/usr/share/sparc64boot -maproot=root ultrashit regret

# grep -i mountd /etc/inetd.conf
mountd/1   dgram   rpc/udp wait    root    /usr/sbin/mountd mountd


Works:

# mountd -d
Getting export list.
Got line /usr/share/sparc64boot -maproot=root ultrashit regret
Making new ep fs=0x700,0x78b
doing opt -maproot=root ultrashit regret
got host ultrashit
got host regret.lavalamp.pittsburgh.pa.us
Getting mount list.
Here we go.
Mount successful.
Mount successful.



-------------------------


The system boots successfully.  DMESG output is normal until it tries to
load the hme0 driver.  At this point, the machine locks solid.  STOP-A is
unresponsive.

After a cold-boot of the machine, the machine has lost it's MAC address
and the HOSTID PROM contents are invalid.

We reset them by:

set-defaults
setenv diag-switch? false
8 0 30 ?? ?? ?? c0ffee mkpl [control-d] [control-r]

?? being the 3 last octets of my MAC address (which I luckily had written
down during rarpd configs)

I can understand a kernel not booting.  I can understand it panic'ing out.  
But resetting my NVRAM values?  That's pretty rough ;-)

Any ideas, folks?

--lava