ndproxy Install Script for OPNSense (run with sudo)

install_ndproxy.sh

#!/bin/sh

# save previous working directory to preserve state
PWD=$(pwd)

# download the opnsense OS source
echo ">>> Downloading OPNsense Source Code..."
rm -r /usr/src
git clone --recurse-submodules https://github.com/opnsense/src /usr/src
cd /usr/src

# Download the freebsd ports repo and get ready to build
echo ">>> Downloading FreeBSD Ports Repository..."
rm -r /usr/ports-upstream
git clone --recurse-submodules https://git.FreeBSD.org/ports.git /usr/ports-upstream
cd /usr/ports-upstream/net/ndproxy

# build and install ndproxy again
echo ">>> Building and Installing ndproxy..."
make clean
make install

echo ">>> Done. Cleaning Up..."
# restore PWD
cd $PWD

@MCterra10 I just set the LAN interface address to one of the /64 ranges and enabled DHCPv6, everything seems to be working now and I got 10/10 on test-ipv6.com. What kind of caveats do you recall? Thanks again for the help :)

Sorry for over half a year to reply; the issues I was having is that the ndproxy module has no ability to set a network whitelist; it will respond to ALL neighbor discovery packets on the interface, regardless of whether you are actually using those addresses or not. Because my hosting provider OVH implements IPv6 horribly, I actually receive ND packets for other people's servers, and ended up inadvertently performing a router hijack on their servers 😂
Because of that I had my server shut off a couple of times, and was forced to start using a NAT setup instead, which is horrible but at least my server stays on.