The reason for working on this is:
This server is obviously using IPv4 (D-GW: 192.168.0.254)
and yet Openvpn decided:
Could not determine IPv4/IPv6 protocol. Using AF_INET6
That looks like a *bug* to me.
On 28/02/2021 17:09, tincanteksup wrote:
Thanks Selva,
as it turns out, I think this could be a different problem.
From the log:
```
OpenVPN 2.5.0 x86_64-w64-mingw32
2021-02-28 08:00:26 interactive service msg_channel=0
2021-02-28 08:00:26 ROUTE_GATEWAY 192.168.0.254/255.255.255.0 I=11
HWADDR=dc:f4:01:e4:f4:10
2021-02-28 08:00:26 open_tun
2021-02-28 08:00:26 tap-windows6 device [OpenVPN TAP-Windows6] opened
2021-02-28 08:00:26 TAP-Windows Driver Version 9.24
2021-02-28 08:00:26 Notified TAP-Windows driver to set a DHCP IP/netmask
of 10.8.0.1/255.255.255.252 on interface
{27C77640-C538-4BDA-A9ED-B7A480CAF22D} [DHCP-serv: 10.8.0.2, lease-time:
31536000]
2021-02-28 08:00:26 Sleeping for 10 seconds...
2021-02-28 08:00:36 Successful ARP Flush on interface [4]
{27C77640-C538-4BDA-A9ED-B7A480CAF22D}
2021-02-28 08:00:36 IPv4 MTU set to 1500 on interface 4 using
SetIpInterfaceEntry()
2021-02-28 08:00:36 C:\Windows\system32\route.exe ADD 10.8.0.0 MASK
255.255.255.0 10.8.0.2
2021-02-28 08:00:36 Warning: route gateway is not reachable on any
active network adapters: 10.8.0.2
(DHCP Failed ?)
2021-02-28 08:00:36 Route addition via IPAPI failed [adaptive]
2021-02-28 08:00:36 Route addition fallback to route.exe
2021-02-28 08:00:36 env_block: add
PATH=C:\Windows\System32;C:\Windows;C:\Windows\System32\Wbem
2021-02-28 08:00:36 Could not determine IPv4/IPv6 protocol. Using AF_INET6
(Selected IPv6 when IPv4 is required ?)
```
Confirmed later in the log:
```
2021-02-28 08:06:47 C:\Windows\system32\route.exe DELETE 10.8.0.0 MASK
255.255.255.0 10.8.0.2
2021-02-28 08:06:47 ROUTE: route deletion failed using
DeleteIpForwardEntry: Impossibile trovare elemento.
```
Summary:
* Use interactive service
* Fail to set IP address
* Fail to set VPN route
* Fail to detect IPv4
* Fail to delete route
I have asked the OP for his server config.
Any other ideas Anyone ?
Thanks.
R
On 28/02/2021 16:18, Selva Nair wrote:
Hi,
On Sun, Feb 28, 2021 at 9:51 AM tincanteksup <tincantek...@gmail.com>
wrote:
Hi,
Ref: https://forums.openvpn.net/viewtopic.php?f=6&t=31928
I recall that there is some `netsh` setting that can effect DHCP working
but I cannot remember what it is or where it was documented.
I believe it is something to do with a `persistent` setting ..
The global setting for dhcp media sense? It can be checked and set by
netsh interface ipv4 show global
and
netsh interface ipv4 set global dhcpmediasense=enabled
Also, --dhcp-renew could force dhcp renewal even if automatic media sense
is not working. I do not recall whether we made --dhcp-renew on by
default.
Selva
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