Dig: specifying a source port

[Kevin Darcy]

Jason Richards wrote:

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>We host a large number of domains as a slave server. Because of some IP
>address changes, I'm trying to mimic zone transfers using dig, but I need to
>be able to specify the source port (since bind is configured with transfer
>source port 53). I know this isn't natively available, but I found a patch
>online for dig v9.2.2 and have seemed to be able to make it work under
>9.2.3.
>
How did you determine this wasn't "natively available"? The dig version 
included in BIND 9.2.2-P3 and later has a -b option which allows you to 
set the source port.

                                                                         
                        - Kevin