[CentOS] vpn - xl2tpd and routing to a net?

[John R Pierce]

On 1/26/2016 9:14 AM, Gordon Messmer wrote:
> On 01/26/2016 05:37 AM, lejeczek wrote:
>> vpn clients with established tunnels can get to VPN server's NICs/IPs 
>> but cannot get through to the net behind the server.
>> Well... they can, but only if on a host (eg. 192.168.2.33) on VPN 
>> server's net I do:
>>
>> route add -host 192.168.2.10 gw 192.168.2.100    # 192.168.2.10 is 
>> VPN client 
>
> If the VPN isn't hosted on the device with the default gateway, then 
> that route should be added to the gateway device.  Proxy arp is an 
> option if you use addresses in the same broadcast domain, but adding a 
> route in the gateway device should work for all configurations.


not in this case, because a random host like 192.168.2.33 thinks the 
remote VPN client 192.168.2.10 is on the same LAN, so it wouldn't even 
forward the packet to the gateway unless the gateway responds to the ARP 
for 192.168.2.10

-- 
john r pierce, recycling bits in santa cruz