<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><br></div><div><br></div><div>Hi Folks,</div><div><br></div><div>This has been driving me nuts all day. I've been unable to google myself out of it. Maybe someone here can help?</div><div><br></div><div><div>I followed the instructions from: </div><div><br></div><div><a href="http://www.tinc-vpn.org/examples/macbook-install/">http://www.tinc-vpn.org/examples/macbook-install/</a></div></div><div><br></div><div>Ubuntu server <-> Ubuntu server works just fine with the same config. Ubuntu server <-> Mac laptop not so much. </div><div><br></div><div>The error I'm getting is:</div><div><br></div><div><div>2012-04-10 21:48:44 tinc.l3vpn[52621]: Error while writing to Generic BSD tap device /dev/tun0: Input/output error</div><div>2012-04-10 21:48:44 tinc.l3vpn[52621]: Error while writing to Generic BSD tap device /dev/tun0: Input/output error</div></div><div><lot of the same spew…></div><div><br></div><div>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. </div><div><br></div><div>Both sides seems happily connected before issuing the DHCP command.</div><div><br></div><div>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: </div><div><br></div><div><div>vpn Link encap:Ethernet HWaddr 4e:31:65:e7:32:f6 </div><div> inet6 addr: fe80::4c32:66ff:fec6:32e7/64 Scope:Link</div><div> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1</div><div> RX packets:1034 errors:0 dropped:0 overruns:0 frame:0</div><div> TX packets:529919 errors:0 dropped:0 overruns:0 carrier:0</div><div> collisions:0 txqueuelen:500 </div><div> RX bytes:87139 (87.1 KB) TX bytes:56253688 (56.2 MB)</div></div><div><br></div><div>standard kinds of goodness. On the Mac side it seems slim on info:</div><div><br></div><div><div>tun0: flags=8851<UP,POINTOPOINT,RUNNING,SIMPLEX,MULTICAST> mtu 1500</div><div> open (pid 57014)</div></div><div><br></div><div>Makes me think that the tun/tap device is wonky? </div><div><br></div><div>The Tun/Tap stuff I got from port as per the instructions. </div><div><br></div><div>Configs: </div><div><br></div><div><div># cat tinc.conf </div><div>Name = laptop</div><div>Mode = switch</div></div><div><br></div><div><div># cat hosts/laptop </div><div>Subnet = 10.20.20.0/24</div><div>Address = 10.20.20.38</div><div><br></div><div>-----BEGIN RSA PUBLIC KEY-----</div></div><div><blahblahblah></div><div><br></div><div><div># cat hosts/server</div><div><br></div><div>-----BEGIN RSA PUBLIC KEY-----</div></div><div><blahblahblah></div><div> </div><div>I figure it's something very simple that I'm missing. Can someone save my sanity please? </div><div><br></div><div>Thanks,</div><div><br></div><div>-Matt</div><div><br></div></body></html>