Hey there, i am having exactly the same problem i will post here what i did to get where i am at, for installation i follow this
post:
So, what i did is i installed GNS3 and dynamips(installed dynagen and am using dynamips from /Application/Dynagen/) i had some troubles at beggining with dynamips, because it wasn’t inside GNS3 .dmg, dont know why, but now, i have it working alright, i have everything set up, and working, i installed tuntaposx correctly and i can see the tap0-15 tun0-15(i followed this
post ) when i ls /dev, so all seems ok, but when i try to open the .net with the confs you have it gives this error on dynamips:
netio_tap_create: unable to open TAP device dev/tap0 (No such file or directory)
in gns3:
206-unable to create TAO NIO
my .net is:
autostart = False
[127.0.0.1:7200]
workingdir = /Users/”usr”/Documents/GNS3/Projectos/SvM/Lab7/Lab7_working
udp = 10000
[[2621]]
image = /Applications/Dynagen/IOS/c2600-advipservicesk9-mz.124-19.bin
ram = 128
idlepc = 0x81fa91bc
sparsemem = True
ghostios = True
chassis = 2621
[[ROUTER R1]]
model = 2621
console = 2000
x = -107.0
y = -58.0
f0/0 = NIO_tap:dev/tap0
[GNS3-DATA]
configs = Lab7_configs
workdir = Lab7_working
[[Cloud C1]]
x = -360.5
y = -69.0
connections = R1:f0/0:NIO_tap:/dev/tap0
i am running dynamips and gns3 has root user(checked with mac activity monitor), i dont know what else to do, but if i dont get any solution in next 2 days, i think i will try to uninstall all and reinstall, cause i have alot to work on and i cant… =/ Need to study for school&CCNA, i am loving GNS3, great APP :) Ty all for atention. Wilson[]