Why is command not found all the time?

Question

Debian

Hello.
I'm trying to raise a proxy on debian according to the manual I found on the Internet:
blog.vpsville.ru/blog/howto/133.html
There was a question with NDPPD.
As indicated in the manual, I create a configuration file:
nano /root/ndppd/ndppd.conf
I write into it:

route-ttl 30000
proxy eth0 {
   router no
   timeout 500   
   ttl 30000
   rule 2a08:14c0:100:200::/64 
  {
      static
   }
}

I launch:
ndppd -d -c /root/ndppd/ndppd.conf
In response:
-bash: ndppd: command not found
I launch in a different way:
/root/ndppd/ndppd.conf
In response:

/root/ndppd/ndppd.conf: line 1: route-ttl: command not found
/root/ndppd/ndppd.conf: line 2: proxy: command not found
/root/ndppd/ndppd.conf: line 4: router: command not found
Try 'timeout --help' for more information.
/root/ndppd/ndppd.conf: line 6: ttl: command not found
/root/ndppd/ndppd.conf: line 7: rule: command not found
/root/ndppd/ndppd.conf: line 9: static: command not found

How to run it?
Thanks in advance.
PS: This is my first time doing this. Do not judge strictly.

Answer 1

cd ~
git clone https://anonscm.debian.org/cgit/collab-maint/ndppd.git
cd ~/ndppd
make all && make install

Did this stage go smoothly for you?