Here's the official page for the error reported:
Google for 'ERROR 2006 (HY000)' yourself and you'll see quite a few hits.
So, let me get this straight ...
you've done an mysqldump of a 2.3 version db to an sql file.
That command using mysqldump looked like what?
you transferred the sql file to a local machine. How did you transfer that file to local machine? Might need to tar ball/zip the .sql file then transfer it to protect the text inside the .sql file.
Now you are trying to import the sql file into a new DB on the local machine ... show command you are using.
Have you turned on logging in MySQL? Is there an error log for MySQL you can reference?
'spirit of sharing', Ken