Symptom
After you turn on Internet Sharing, you may see a message in the preference pane that repeats the same port (network interface) name two or more times. Possible messages include these examples:
Figure 1 The Internet Sharing preference pane
Solution
The name of the physical network interface (such as AirPort or Built-in Ethernet) appears once for each active port configuration that you have created in the Network pane of System preferences. If you have three active port configurations for Built-in Ethernet named "Ether1", "Ether2", and "Ether3", then "Built-in Ethernet" appears three times in the message. What this actually indicates to you is that your connection is being shared over each active port configuration for the named interface. For more information, see technical document 106800, "Mac OS X: How to Create Port Configurations".
Important: Users of AirPort should only use one port configuration for AirPort. It is not possible to create multiple AirPort configurations in Mac OS X 10.2, though you could have still have them if they were created in Mac OS X 10.1 and imported during an upgrade installation. Use of multiple AirPort port configurations may result in unexpected behavior. For best performance, turn off and delete additional port configurations for AirPort.
After you turn on Internet Sharing, you may see a message in the preference pane that repeats the same port (network interface) name two or more times. Possible messages include these examples:
- "This connection will be shared with computers connected to Built-in Ethernet, AirPort and Built-in Ethernet."
- "This connection will be shared with computers connected to AirPort and AirPort."
Figure 1 The Internet Sharing preference pane
Solution
The name of the physical network interface (such as AirPort or Built-in Ethernet) appears once for each active port configuration that you have created in the Network pane of System preferences. If you have three active port configurations for Built-in Ethernet named "Ether1", "Ether2", and "Ether3", then "Built-in Ethernet" appears three times in the message. What this actually indicates to you is that your connection is being shared over each active port configuration for the named interface. For more information, see technical document 106800, "Mac OS X: How to Create Port Configurations".
Important: Users of AirPort should only use one port configuration for AirPort. It is not possible to create multiple AirPort configurations in Mac OS X 10.2, though you could have still have them if they were created in Mac OS X 10.1 and imported during an upgrade installation. Use of multiple AirPort port configurations may result in unexpected behavior. For best performance, turn off and delete additional port configurations for AirPort.