How to fix error when configuring 3proxy on Debian?

Question

linux

Hello, there was a problem when setting up an IPv6 proxy based on ndppd + 3proxy in Debian 8. I made changes to the kernel configuration, I added the following lines to the /etc/sysctl.conf file:
net.ipv6.conf.eth0.proxy_ndp=1
net.ipv6.conf .all.proxy_ndp=1
net.ipv6.conf.default.forwarding=1
net.ipv6.conf.all.forwarding=1
net.ipv6.ip_nonlocal_bind = 1

And then I got these errors:
sysctl: cannot stat /proc/sys/ net/ipv6/conf/eth0/proxy_ndp: No such file or directory
sysctl: cannot stat /proc/sys/net/ipv6/ip_nonlocal_bind: No such file or directory
Please help me solve this problem. Screenshot of the problem for clarity.

Answer 1

You have enabled options that require configuration files that you do not have.

Answer 2

I understand that you need to create the missing files, but how?

Answer 3

Show output:

ifconfig

uname-a

net.ipv6.ip_nonlocal_bind = 1 available since kernel 4.3