Hello,
We bought 6 new laptops with an I218-LM Ethernet card. (Dell Latitude E5540).
Everything works fine, excepted when the user is resuming from sleep mode or hibernation.
Using Wireshark, the PC is effectively trying to renew it's DHCP lease; our DHCP server is offering a lease, with no effect, and after 2 minutes, the NIC takes an APIPA address.
User have to disable and enable the card to get an IP back.
After some investigation, the problem occurs after installing SEP with NTP (firewall) feature, but we cannot find any event in the firewall log stating that something was blocked.
Of course, Symantec blames Intel's drivers....
I've tried every driver that was released recently, from the Dell and Intel websites, with no success.
I've tried to disable "Energy efficient Ethernet".
Going through Symantec support, I found this post which helped me somehow : http://www.symantec.com/connect/forums/sep-firewall-blocking-dhcp-request-i-think-after-sleep-or-hibernation
I've uninstalled the tools for the card management and reinstalled the driver alone (using the one that was unzipped in the temp folder).
It works if I uncheck the "Allow the computer to turn off this device to save power" box.
As my case is lost in Dell's infernal call centre loop, (they are replacing the motherboards every 2 weeks or asking me to reinstall the OS), I was wondering if you were aware of such issues with theses NIC's.
OS= Windows 7 x64 Pro SP1
Symantec=12.1.4013.4013
Drivers tested: original one (from 07/2013), 12.11.77.0, 12.11.96.1
Thanks for your attention!
Kr,
Sagouain