Boot SPARC server behind NAT over the Internet from VM also behind NAT

Topology

   +--------------------+
   |                    |
   | SPARC server       |
   | 192.168.0.60       |
   |                    |
   +--------------------+
              |                   +-------------------------------------+
              |                   |  Router #1                          |
         +--------+               |                                     |
         | Switch +---------------+  84.112.126.72    (vienna.mgk.ro)   |
         +--------+               |  192.168/24                         |
             |                    |                                     |
             |                    |  84.112.126.72 -> 192.160.0.100     |
   +---------------------+        |                                     |
   |                     |        +-------------------------------------+
   | z800                |                      |
   | 192.168.0.100       |                      |
   |                     |                      |
   +---------------------+       +--------------+
                                 |
                                 |                         Site #1 (Vienna)
                                 v
 +-------------------------+  Internet  +---------------------------------+
                                 ^
                                 |                         Site #2 (Sibiu)
          +----------------------+
          |
          |
  +-------------------+                +----------------------+
  | Router #2         |                |  Router #3 (Vmware)  |
  |                   |                |                      |
  | xx.xx.xx.xx       +----------------+  172.20.8.xx         |
  | 172.20/20         |                |  172.16.24/24        |
  +-------------------+                +-----------^----------+
                                                   |
                                                   |
                     +-------------------+         |
                     |  Solaris VM       |         |
                     |                   |         |
                     |  172.16.24.128    +---------+
                     |                   |
                     +-------------------+

Instructions

Install Solaris 11 (amd64) in VMware, on laptop.

Set-up SPARC AI server:

pfexec installadm create-service -a sparc 

Make a client-specific AI config:

cp /etc/netboot/{system,webboot}.conf /etc/netboot/cl.ie.nt.ip 

Edit /etc/netboot/client-ip/webboot.conf to reference client (e.g. behind NAT) IPs.

Set-up remote port forwarding:

ssh -S none -NT -R 5555:172.16.24.128:5555 -L 8080:192.168.0.1:80 vienna.mgk.ro 

Set-up SPARC machine to netboot using static IP:

setenv network-boot-arguments host-ip=192.168.0.60,router-ip=192.168.0.1,subnet-mask=255.255.255.0,file=http://192.168.0.100:5555/cgi-bin/wanboot-cgi 
boot net