On 30.07.23 21:55, Jason Long wrote:
> I added the following lines to the server configuration file:
> route 172.20.1.0  255.255.0.0
> push "route 172.20.1.0  255.255.0.0"
> 
> And added the following line to the client.ovpn file:
> route add 172.20.1.0 255.255.0.0

> So you're telling the server to *itself* route that destination into the 
> VPN connection, and you're telling the client - twice - to also route it 
> into the VPN. The poor packets are in Hotel California now.

> When I connected to the OpenVPN server, then I got the following message:
> route addition failed using service: The parameter is incorrect.

> Well, yes, "172.20.1.0" has a nonzero bit outside the mask 
> "255.255.0.0"'s nonzero bits, hence it's not a proper network 
> identification. I'd guess that you wanted the mask to be "255.255.255.0".


Hello,
Thanks again.
I added the following lines to the server.conf:

push "route 172.21.1.0 255.255.255.0"
push "dhcp-option DNS 172.20.1.2"
push "dhcp-option DNS 172.20.1.7"
push "redirect-gateway autolocal"

And added the following lines to the client.ovpn file:

route 172.20.1.0 255.255.255.0
push "dhcp-option dns 172.20.1.2"
push "dhcp-option dns 172.20.1.7"
dhcp-option DOMAIN MY_DOMAIN

Then, enable the IP Forwarding and problem solved.
My problem is that I did it by enabling the IP Forwarding. I wanted to do it 
without it. I guess that I must to enable the IP Forwarding because of my 
OpenVPN server NICs. It has two NICs (NAT and Local) and because of it I must 
enable IP Forwarding.
What is your opinion?



Kind regards,
-- 
Jochen Bern
Systemingenieur

Binect GmbH
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