For kicks, I turned off all the remaining ones too, still no good. So taking that one out of the list, then ethtool -k says: I think that's for udp-fragmentation-offload, which is already off anyway. > Cannot set device udp large send offload settings: Operation not supported I can't run your command exactly, as it says: Here's my pre-existing ethtool -k output, and there's no difference between the kernel builtin or external e1000e: DD-WRT doesn't seem to have ethtool though, so I'm only able to tweak on the troubled machine itself. I'm testing by watching ping losses to my router now. > Capabilities: MSI: Enable+ Count=1/1 Maskable- 64bit+

> Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=1 PME. > Capabilities: Power Management version 2 > Region 1: Memory at fe528000 (32-bit, non-prefetchable) > Region 0: Memory at fe500000 (32-bit, non-prefetchable) > Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- SERR- Latency: 0 > Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+ > Subsystem: Intel Corporation Device 2003 > 00:19.0 Ethernet controller: Intel Corporation 82579V Gigabit Network Connection (rev 05) Perhaps a newer version could be patched into the F15 kernel? I tried e1000e 1.3.17-NAPI from e1000.sf.net, and so far with that the network is flawless. I don't know what diagnostics would be helpful here, but please ask and I will try. Version-Release number of selected component (if applicable): DNS requests fail even pinging my router drops ~25%. With the e1000e driver built into this kernel, I get very unstable network access.

D0 packet coalescing enable or disable