Assumptions:
- IPv4 network between ldoms and primary ldom: 192.168.100.0/24

Primary ldom (Solaris 11.4) is assigned 192.168.100.1/24 on the vnic0 interface ((vnic0 interface was alredy configured by someone else...)

netbsd1 has allocated 192.168.100.2/24

Setup:

Documentation in general - see Oracle Solaris Firewall (https://docs.oracle.com/cd/E37838_01/html/E60993/pfovw-1.html)

Configuration steps
- pkg install firewall (installs pf service)
- svcadm enable firewall (enables the firewall service and creates a basic /etc/firewall/pf.conf file)
- edit /etc/firewall/pf.conf to tailor the setup
-- add the line "pass out on net0 from 192.168.100.2 to any nat-to (net0)" to handle all traffic originating from the particular IPv4 address, in this case the netbsd1 ldom
- svcadm restart firewall (reload with new configuration)
- svcs firewall (verify that the service has started properly)
- Note: FTP proxy handling is missing - not necessary for installing via HTTP/HTTPS instead.

LDOM configuration steps
- Install OS of choice
- assign IPv4 address in the 192.168.100.0/24 subnet
- addd 192.168.100.1 as default gateway (the IPv4 address of the primary ldom)