Description of problem: After a link down / link up cicle the ethernet card loses the promisc state, ifconfig shows PROMISC, but the programs doesn't receive packets. Unset and reset the promisc state solves the problem. Version-Release number of selected component (if applicable): uname -a: Linux servidor.fuenlabrada.calvoymunar.com 2.6.17-1.2187_FC5 #1 Mon Sep 11 01:17:06 EDT 2006 i686 athlon i386 GNU/Linux Ethernet card: Marvell Technology Group Ltd. 88E8001 Gigabit Ethernet Controller (rev 13) How reproducible: Steps to Reproduce: 1. start tcpdump 2. disconnect and connect the ethernet cable 3. start a rpl client in the network 4. tcpdump doesn't show the packets 5. restart tcpdump and it sees the packets Actual results: Loses promisc status. Expected results: Maintains promisc status Additional info:
Created attachment 142309 [details] proposed patch I will probably push this patch upstream since it should resolve your issue. I would like to test it out first, but don't have access to any hardware today. Would a test-build be helpful or would you like to try this patch yourself? If you would like a test-build let me know what ARCH you would like and I can put one together.
The machine that has the problem is a production server, please, give me two or three days to schedule a reboot. Thanks.
I posted the patch from Comment #1 to netdev since it seemed fine to me.
Created attachment 144141 [details] netdev patch This patch was proposed and accepted upstream as a result of the patch I posted.
Were you able to build a test kernel with the patch from Comment #4 and verify that it resolved your issue?
This fix should be in 2.6.20.