Hi Selva,
On 26-Jan-18 16:08, Selva Nair wrote:
On Fri, Jan 26, 2018 at 8:23 AM, Jan Just Keijser <janj...@nikhef.nl> wrote:
On 26/01/18 14:11, Jan Just Keijser wrote:
the patch works as expected but I did notice something in the openvpn log
:
Fri Jan 26 14:08:09 2018 do_ifconfig, tt->did_ifconfig_ipv6_setup=1
Fri Jan 26 14:08:10 2018 NETSH: C:\Windows\system32\netsh.exe interface
ipv6 set address interface=17 2001:610:120::200:0:1001 store=active
Fri Jan 26 14:08:10 2018 add_route_ipv6(2001:610:120::200:0:0/112 ->
2001:610:120::200:0:1001 metric 0) dev vpn0
Fri Jan 26 14:08:10 2018 C:\Windows\system32\netsh.exe interface ipv6 add
route 2001:610:120::200:0:0/112 interface=17 fe80::8 store=active
Fri Jan 26 14:08:10 2018 env_block: add
PATH=C:\Windows\System32;C:\Windows;C:\Windows\System32\Wbem
the route was added with the default GW of fe80::8 : should I be worried ?
Note that this also happened with the regular 2.4.4 version of OpenVPN and
also note that the TAP adapter on my Win7 laptop is named 'vpn0'
arrrgh, the important line is missing:
ERROR: Windows route add ipv6 command failed: returned error code 1
Gert has explained the fe80::8 magic.
Here is my guess about the ERROR: The route already existed and so
errored trying to add again -- most likely from a previous run as it
seems we have a problem in deleting the route on exit (I guess this is
on Windows 10) (see Trac 1003:
https://community.openvpn.net/openvpn/ticket/1003 )
"netsh int ipv6 show route" will confirm that.
The route destinations have their host bits zeroed out before setting
route, but those bits reappear (which is strange) in route delete.
And netsh doesnt like that at least on Windows 10. Gert, any idea why
this happens?
this is on *Windows 7* and indeed that route is never deleted when
OpenVPN exits. Here's the error associated with *that*:
Fri Jan 26 16:13:08 2018 ERROR: Windows route delete ipv6 command
failed: returned error code 1
Fri Jan 26 16:13:09 2018 NETSH: C:\Windows\system32\netsh.exe interface
ipv6 delete address vpn0 2001:610:120::200:0:1001 store=active
Fri Jan 26 16:13:09 2018 TAP: DHCP address released
C:\Users\janjust\OpenVPN\config> C:\Windows\system32\netsh.exe interface
ipv6 delete route 2001:610:120::200:0:1001/112
interface=17 fe80::8 store=active
The parameter is incorrect.
HTH,
JJK
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