Lion OS X tinc issues.
Matthew Tolle
matt at night.com
Wed Apr 11 18:05:38 CEST 2012
Tuntaposx is installed:
# port installed
The following ports are currently installed:
lzo2 @2.05_1 (active)
openssl @1.0.1_2 (active)
openvpn2 @2.2.1_0 (active)
tinc @1.0.18_0 (active)
tuntaposx @20111101_0 (active)
zlib @1.2.6_0 (active)
The commands you have below are more or less what I've been doing. My scroll back doesn't go far enough back for me to cut and paste the output. I can run it again when I get home tonight and send you more details if it helps. The basics are:
In one screen session I run: tincd --logfile=/var/log/tinc --debug=2 -n
In a second screen session I've got tail -f /var/log/tinc going.
Tunnel comes up. On the ubuntu side your see this;
2012-04-10 22:00:29 tinc.vpn[9267]: Trying to connect to laptop (185.193.32.20 port 655)
2012-04-10 22:00:29 tinc.vpn[9267]: Connected to laptop (185.193.30.32 port 655)
2012-04-10 22:00:29 tinc.vpn[9267]: Connection with laptop (185.193.30.32 port 655) activated
On the laptop side it looks connected as well:
2012-04-10 22:00:56 tinc.vpn[57014]: tincd 1.0.18 (Apr 9 2012 13:14:47) starting, debug level 2
2012-04-10 22:00:56 tinc.vpn[57014]: /dev/tun0 is a Generic BSD tap device
2012-04-10 22:00:56 tinc.vpn[57014]: Executing script tinc-up
2012-04-10 22:00:56 tinc.vpn[57014]: Listening on 0.0.0.0 port 655
2012-04-10 22:00:56 tinc.vpn[57014]: Listening on :: port 655
2012-04-10 22:00:56 tinc.vpn[57014]: Ready
2012-04-10 22:01:33 tinc.vpn[57014]: Connection from 65.13.183.22 port 10503
2012-04-10 22:01:33 tinc.vpn[57014]: Connection with server (64.13.183.22 port 10503) activated
I run the ipconfig set tun0 DHCP. That's when I get the errors.
I've tried waiting for a few minutes after the tunnels is up to see if things need to settle down before I run the DHCP command. Doesn't make a difference.
Thanks,
-Matt
On Apr 11, 2012, at 4:33 AM, Mike Bentzen wrote:
> Hi Matthew,
>
> The subnet variable is not needed in switch mode. You can remove this line from your laptop's hosts file.
>
> "Error while writing to Generic BSD tap device /dev/tun0: Input/output error"
> This means that tinc cannot write to the network interface. It usually means that the interfaces don't exist (i.e. tuntaposx isn't installed) or it isn't configured.
>
> If you have installed tuntaposx try this:
>
> Open a terminal, and run tinc in debug mode:
> :# tinc -n <vpn> -d5 -D
> When tinc is running, try to bring up the tap0 adapter. Open another terminal and run the command:
> :# ipconfig set tap0 dhcp
>
> Hopefully, you should not see the Input/Output error anymore.
>
> Kind Regards,
> Mike
>
>
> On 11/04/2012 3:10 PM, Matthew Tolle wrote:
>>
>>
>>
>> Hi Folks,
>>
>> This has been driving me nuts all day. I've been unable to google myself out of it. Maybe someone here can help?
>>
>> I followed the instructions from:
>>
>> http://www.tinc-vpn.org/examples/macbook-install/
>>
>> Ubuntu server <-> Ubuntu server works just fine with the same config. Ubuntu server <-> Mac laptop not so much.
>>
>> The error I'm getting is:
>>
>> 2012-04-10 21:48:44 tinc.l3vpn[52621]: Error while writing to Generic BSD tap device /dev/tun0: Input/output error
>> 2012-04-10 21:48:44 tinc.l3vpn[52621]: Error while writing to Generic BSD tap device /dev/tun0: Input/output error
>> <lot of the same spew…>
>>
>> The error pops up after I try to get DHCP going over the link. (ipconfig set tun0 DHCP). Not that it works before I try and do that.
>>
>> Both sides seems happily connected before issuing the DHCP command.
>>
>> I've tried just about everything I can think of for the configs. Switch on, off, bridging on and off on the server side.. nothing seems to work. I do find it odd that under linux the virtual device looks like this:
>>
>> vpn Link encap:Ethernet HWaddr 4e:31:65:e7:32:f6
>> inet6 addr: fe80::4c32:66ff:fec6:32e7/64 Scope:Link
>> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
>> RX packets:1034 errors:0 dropped:0 overruns:0 frame:0
>> TX packets:529919 errors:0 dropped:0 overruns:0 carrier:0
>> collisions:0 txqueuelen:500
>> RX bytes:87139 (87.1 KB) TX bytes:56253688 (56.2 MB)
>>
>> standard kinds of goodness. On the Mac side it seems slim on info:
>>
>> tun0: flags=8851<UP,POINTOPOINT,RUNNING,SIMPLEX,MULTICAST> mtu 1500
>> open (pid 57014)
>>
>> Makes me think that the tun/tap device is wonky?
>>
>> The Tun/Tap stuff I got from port as per the instructions.
>>
>> Configs:
>>
>> # cat tinc.conf
>> Name = laptop
>> Mode = switch
>>
>> # cat hosts/laptop
>> Subnet = 10.20.20.0/24
>> Address = 10.20.20.38
>>
>> -----BEGIN RSA PUBLIC KEY-----
>> <blahblahblah>
>>
>> # cat hosts/server
>>
>> -----BEGIN RSA PUBLIC KEY-----
>> <blahblahblah>
>>
>> I figure it's something very simple that I'm missing. Can someone save my sanity please?
>>
>> Thanks,
>>
>> -Matt
>>
>>
>>
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>> tinc at tinc-vpn.org
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>
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