You are given the following:

pfSense

pfSense LAN IP: $192\mathrm{.}168\mathrm{.}30\mathrm{.}58/24$

pfSense OPT$1$ IP: $172\mathrm{.}16\mathrm{.}100\mathrm{.}1/24$

pfSense OPT$2$ IP: $172\mathrm{.}16\mathrm{.}200\mathrm{.}1/24$

MS$2($Your Choice of which IP to use within the given Network ID and subnet mask$)$

MS$2$ LAN IP: $192\mathrm{.}168\mathrm{.}30\mathrm{.}0/24($enp$0$s$3)($active connection$)$

MS$2$ OPT$1$ IP: $172\mathrm{.}16\mathrm{.}100\mathrm{.}0/24($enp$0$s$8)($active connection$)$

Configure the interfaces file with the above MS$2$ settings. You will need to add the address, netmask, and gateway.

GNU nano $3\mathrm{.}2$

$/$etc$/$network$/$interfaces

auto lo

iface lo inet loopback

auto enpos$3$

iface enp$0$s$3$ inet dhcp

auto enp$0$s $8$

iface enpOs$8$ inet dhcp