GNS3 reports "206-unable to create UDP NIO"

rushdownrushdown Posts: 14Member ■□□□□□□□□□
I was trying to open a .net file that I saved earlier in GNS3. When I try to open it, I get this error that says:

206-unable to create UDP NIO

How do I open my saved file so that I can continue working on it?


  • tierstentiersten Posts: 4,505Member
    2 reasons. Something else is using that UDP port which Dynamips wants to use or the net file is incorrect and one router is listening on one port whilst the other router wants to connect to a different port.

    Most probably the first reason anyway so go look at the Dynamips log to work out what is going on.

    Google for this next time as I just tried it and all the results point this out.
Sign In or Register to comment.