When I use InetAdress.getAllByName(String host) on my workstation,I get two IP addresses. One is for the LAN connection and the other isfor the dialup connection. I need to get the dial up connection’s IPaddress because the LAN’s IP address is only known by the localnetwork. Is there a way to determine which IP is which? Are theyordered or something?

Unfortunately, the order in which the IP addresses are returned isplatform dependent. You cannot rely on the primary network interfacebeing listed first all of the time. However, when writing networkclient or server applications, if you do not bind to a specificinterface your application will work across both interfaces. If youhave a client application that is already connected, you can alwaysdetermine the interface it is on by calling Socket.getLocalAddress().But if you really need to know which IP address corresponds to whichinterface, you can always write some native code or use Runtime.exec()to execute a local utility such as ifconfig (Unix) and parse theoutput.

Share the Post:
Share on facebook
Share on twitter
Share on linkedin


The Latest

technology leadership

Why the World Needs More Technology Leadership

As a fact, technology has touched every single aspect of our lives. And there are some technology giants in today’s world which have been frequently opined to have a strong influence on recent overall technological influence. Moreover, those tech giants have popular technology leaders leading the companies toward achieving greatness.

iOS app development

The Future of iOS App Development: Trends to Watch

When it launched in 2008, the Apple App Store only had 500 apps available. By the first quarter of 2022, the store had about 2.18 million iOS-exclusive apps. Average monthly app releases for the platform reached 34,000 in the first half of 2022, indicating rapid growth in iOS app development.

microsoft careers

Top Careers at Microsoft

Microsoft has gained its position as one of the top companies in the world, and Microsoft careers are flourishing. This multinational company is efficiently developing popular software and computers with other consumer electronics. It is a dream come true for so many people to acquire a high paid, high-prestige job