Hi,

I have VPN tunnel between Linux Solaris but something goes wrong and i
can't start and even unplumb device. I can't restart the server right
as its critical for our production system.

Iam using solaris TUN/TAP driver from here http://www.whiteboard.ne.jp/~admin2/tuntap/
and patched OpenVPN

output from commands

root@xxx # cat openvpn.log
Fri Nov 9 11:39:00 2007 OpenVPN 2.0.7 i386-pc-solaris2.8 [SSL] [LZO]
built on Jul 6 2006
Fri Nov 9 11:39:00 2007 IMPORTANT: OpenVPN's default port number is
now 1194, based on an official port number assignment by IANA.
OpenVPN 2.0-beta16 and earl
Fri Nov 9 11:39:00 2007 WARNING: No server certificate verification
method has been enabled. See http://openvpn.net/howto.html#mitm for
more info.
Fri Nov 9 11:39:00 2007 Control Channel Authentication: using '/etc/
openvpn/XXX/keys/ta.key' as a OpenVPN static key file
Fri Nov 9 11:39:00 2007 LZO compression initialized
Fri Nov 9 11:39:00 2007 NOTE: UID/GID downgrade will be delayed
because of --client, --pull, or --up-delay
Fri Nov 9 11:39:00 2007 UDPv4 link local: [undef]
Fri Nov 9 11:39:00 2007 UDPv4 link remote: xxx.xxx.xxx.xxx:1194
Fri Nov 9 11:39:01 2007 [server] Peer Connection Initiated with
xxx.xxx.xxx.xxx:1194
Fri Nov 9 11:39:02 2007 Can't set PPA 0: File exists (errno=17)
Fri Nov 9 11:39:02 2007 Exiting

root@xxx # ifconfig tap0
tap0: flags=1000842<BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 4
inet 10.182.182.182 netmask ff000000 broadcast 10.255.255.255

root@xxx # ifconfig tap0 unplumb
ifconfig: I_PUNLINK for ip: tap0: Invalid argument

root@xxx # uname -a
SunOS zeus 5.10 Generic_118855-14 i86pc i386 i86pc

please help how to remove tap0 interface without server restart

ts wrote:
> Hi,
>
> I have VPN tunnel between Linux Solaris but something goes wrong and i
> can't start and even unplumb device. I can't restart the server right
> as its critical for our production system.
>
> Iam using solaris TUN/TAP driver from here http://www.whiteboard.ne.jp/~admin2/tuntap/
> and patched OpenVPN
>
> output from commands
>

> Fri Nov 9 11:39:02 2007 Can't set PPA 0: File exists (errno=17)
> Fri Nov 9 11:39:02 2007 Exiting
>
> root@xxx # ifconfig tap0
> tap0: flags=1000842<BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 4
> inet 10.182.182.182 netmask ff000000 broadcast 10.255.255.255
>
> root@xxx # ifconfig tap0 unplumb
> ifconfig: I_PUNLINK for ip: tap0: Invalid argument
>
I run the same setup and I used to see this problem, have you tried

ifconfig tap0 down
ifconfig tap0 unplumb

Which used to clear the problem for me.

--
Ian Collins.

On 9 Lis, 22:21, Ian Collins <ian-n...@hotmail.com> wrote:
> ts wrote:
> > Hi,
>
> > I have VPN tunnel between Linux Solaris but something goes wrong and i
> > can't start and even unplumb device. I can't restart the server right
> > as its critical for our production system.
>
> > Iam using solaris TUN/TAP driver from herehttp://www.whiteboard.ne.jp/~admin2/tuntap/
> > and patched OpenVPN
>
> > output from commands
>
> > Fri Nov 9 11:39:02 2007 Can't set PPA 0: File exists (errno=17)
> > Fri Nov 9 11:39:02 2007 Exiting
>
> > root@xxx # ifconfig tap0
> > tap0: flags=1000842<BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1500 index 4
> > inet 10.182.182.182 netmask ff000000 broadcast 10.255.255.255
>
> > root@xxx # ifconfig tap0 unplumb
> > ifconfig: I_PUNLINK for ip: tap0: Invalid argument
>
> I run the same setup and I used to see this problem, have you tried
>
> ifconfig tap0 down
> ifconfig tap0 unplumb
>
> Which used to clear the problem for me.
>
> --
> Ian Collins.

yeap, i tried it, and nothing else happened

for now iam forcing use of tap1 and waiting for a while when i can
reboot the server if i don't find solution