Issue: A change of IP address is needed in FreeBSD.
Solution: If you do not have the root password boot into Single User mode [option 4]. Procced to step 1.
If you have the root password procced to step 2.
1. mount -o (if you get a read-only error, you will have to run fschk -y)
2. vi /etc/rc.conf (If vi is unavailable use ee)
at this point simply edit the IP Address lines that will need to be corrected.