SQL Developer "visits" each defined connection on startup

Question

I am using SQL Developer 2.1.1.64. When I start it, it "visits" each defined connection. I'm using the term "visits" rather than "connects" because it doesn't auto-expand the entries in the Connections list, and it doesn't open up any SQL Worksheets. But it is DEFINITELY doing something which causes it to attempt to access each of the database servers (perhaps only to determine if a connection is possible).
Is there any way to turn this off?
The reason I ask: I have a number of connections pre-defined, for accessing customers' systems through a corporate VPN. Each time I access a customer system, the VPN prompts me to login and indicate a reason for access. I don't want to have to loop through all of those prompts every time I start SQL Developer.
Some of my colleagues are using older versions (1.2, 1.5), and they don't have this issue.

Answer 1

Hi kilsen,
Laptop have 4 connections which are on local vm and 7 connections on local database.
Local database not started, only started database on vm at 192.168.0.211.
Data from wireshark after starting SQL Developer.
No.   Time         Source            Destination          Protocol Info
374 35.733516   Dell_ac:3b:49         Broadcast             ARP      Who has 192.168.0.4?  Tell 192.168.0.199
375 36.233705   Dell_ac:3b:49         Broadcast             ARP      Who has 192.168.0.34?  Tell 192.168.0.199
376 36.272571   Dell_ac:3b:49         Broadcast             ARP      Who has 192.168.0.2?  Tell 192.168.0.199
377 37.233707   Dell_ac:3b:49         Broadcast             ARP      Who has 192.168.0.34?  Tell 192.168.0.199
378 37.233756   Dell_ac:3b:49         Broadcast             ARP      Who has 192.168.0.2?  Tell 192.168.0.199
379 37.387648   Dell_ac:3b:49         Broadcast             ARP      Who has 192.168.0.211?  Tell 192.168.0.199
380 37.387816   Vmware_ac:de:2e       Dell_ac:3b:49         ARP      192.168.0.211 is at 00:0c:29:ac:de:2eIt's broadcasting every 10 to 30 seconds looking for my local vm destinations where IP addresses are 192.168.0.2 , 4, 34 and 211.
When i login to vm 211 connection, data from wireshark:
384 37.388488   192.168.0.199         192.168.0.211         TNS      Request, Connect (1), ConnectFrom my limited observations, laptop only broadcast for local vm IP addresses and do not actually send request to connect.
Indeed there is no visible side effects felt on my laptop.
Because of my VPN, I get prompted each time an application initially accesses a remote server+
which would mean that it indeed send request to connect for vpn connection.
Unable to test as i have no vpn connection.
Would be interesting if you can install wireshark and check it out.
HTH
Zack