[x]
Posted via EE Mobile

Search, ask, and monitor your questions on the go with EE Mobile. Visit Experts Exchange from your mobile device and never be out of touch again.

Question
[x]
Attachment Details
[x]
The Solution Rating System

With so many solutions, how can you tell which solutions are most likely to help you and which ones are not? To provide you with a tool to use, we rate our solutions based on various elements that most accurately determine if a solution is a quality solution. To explain what factors affect the solution rating, here are the elements we take into consideration when formulating our solution rating.

  • The Grade of the Solution
  • The Zone Rank of the Expert Providing the Solution
  • The Number of Author and Expert Comments
  • The Number of Experts Contributing
  • The Feedback of the Community

Your Input Matters
Because of the way the system is set up, the most important variable in this equation is you. As a member of Experts Exchange, you are able to cast your vote on the quality of the solutions in regard to how complete, accurate, helpful and easy to understand each solution is. When you provide your feedback, each rating is adjusted accordingly. So, if you see a solution that has a poor rating that you think is a good solution, let us know by rating it. As you do, the rating will be adjusted and will become more accurate for other members of our site.

If you have any suggestions that you would like to make for our rating system, please ask a question in the Suggestions Zone of Community Support.

Thank you!

7.7

dhclient, refresh ip address before lease timeout

Asked by ravenpl in Unix Networking, Linux Networking, Dynamic Host Configuration Protocol (DHCP)

I have this ISP provider which changes the dynamic IP in random periods. At random moment ISP reconfigures it's dhcp-server/firewall/router to provide new ip, while instantly is blocking the old IP.
My linux box is cut off from the world instantly. It should renew the IP, unfortunately the lease time haven't expired yet - so it's waiting.

I heard, that ISPs router is supposed to send some notification that ip is invalid in reply to my outgoing packets with old source ip set.
And maybe it does, maybe not.
I wanted make sure though, that my linux is not blocking those notifications and uses them to force IP refresh.

Anybody knows what firewall rules should be applied to pass those notifications?
Anybody known what extra kernel/net/dhclient configuration should I add to make it works?
I'm running fedora box.
[+][-]03/26/09 11:58 AM, ID: 23993926Accepted Solution

View this solution now by starting your 30-day free trial. Setting up your free trial is quick, easy, and secure. We will return you to this solution, unlocked, when you're done.

About this solution

Zones: Unix Networking, Linux Networking, Dynamic Host Configuration Protocol (DHCP)
Sign Up Now!
Solution Provided By: gheist
Participating Experts: 1
Solution Grade: B
 
 
Loading Advertisement...
20091111-EE-VQP-89 - Hierarchy / EE_QW_EXPERT_20070906