does using ifconfig-push garanteed that no other client will take this ip ?

[emoxam]

Does using ifconfig-push garanteed that no other client will take this ip ?

[Pippin]

Hi,

It depends on the setup.
Please post your server configuration.

You would want to start read about

--topology mode
--server args
--ifconfig-pool args
--ifconfig-push args

in manual 2.6

[emoxam]

topology subnet
push "topology subnet"
ifconfig 192.168.200.1 255.255.255.0
server 192.168.200.0 255.255.255.0 nopool
ifconfig-pool 192.168.200.2 192.168.200.100
route-gateway 192.168.200.1
push "route-gateway 192.168.200.1"
push "dhcp-option DNS 172.16.10.1"
push "dhcp-option DNS 172.16.10.2"
push "route 172.16.10.0 255.255.255.0"
push "route 172.16.11.0 255.255.255.0"
ifconfig-pool-persist ipp.txt​

And i created files at /etc/openvpn/ccd with the different ips (* means each client has it's own ip)

ifconfig-push 192.168.200.* 255.255.255.0

But i forget about 1 client and he begin to use ip witch used different client! at the same time! That client has permanent ip set! But other occupied it!

[Pippin]

Hi,

I see you already use the nopool and ifconfig-pool options which makes ifconfig-pool-persist a possible conflicting option.
Just remove,

ifconfig-pool-persist ipp.txt

.
For clarity,

ifconfig-pool 192.168.200.2 192.168.200.100

means that dynamic clients (clients without ccd file) will be allocated a tunnel IP from 192.168.200.2 till 192.168.200.100
Fixed clients (clients with ccd file) can be allocated a tunnel IP from 192.168.200.101 till 192.168.200.254 via ifconfig-push.

Also,

ifconfig 192.168.200.1 255.255.255.0
route-gateway 192.168.200.1
push "route-gateway 192.168.200.1"
push "topology subnet"

are not necessary because of

server 192.168.200.0 255.255.255.0 nopool

.
Please read

--server args

in manual 2.6 to understand why.
(dev tun AND topology == subnet)