Re: Bad DHCP Checksums over VLANs

2018-09-16 Thread Kurt Jaeger
Hi! > >> ifconfig igb0 -rxcsum -txcsum -wol -tso4 -vlanmtu -vlanhwtag > >> -vlanhwcsum -vlanhwtso > >> > >> Try to disable everything that can be disabled, e.g. LRO etc. > > > > Disabling vlanhwtag works around the problem. > > > > Also note that only DHCP traffic has this problem. If I assign a

Re: Bad DHCP Checksums over VLANs

2018-09-16 Thread Kristof Provost
On 16 Sep 2018, at 23:05, Eric van Gyzen wrote: On 9/15/18 1:06 AM, Kurt Jaeger wrote: Can you disable all the options of the NIC ? ifconfig igb0 -rxcsum -txcsum -wol -tso4 -vlanmtu -vlanhwtag -vlanhwcsum -vlanhwtso Try to disable everything that can be disabled, e.g. LRO etc. Disabling vl

Re: Bad DHCP Checksums over VLANs

2018-09-16 Thread Eric van Gyzen
On 9/15/18 1:06 AM, Kurt Jaeger wrote: Can you disable all the options of the NIC ? ifconfig igb0 -rxcsum -txcsum -wol -tso4 -vlanmtu -vlanhwtag -vlanhwcsum -vlanhwtso Try to disable everything that can be disabled, e.g. LRO etc. Disabling vlanhwtag works around the problem. Also note that

Re: Bad DHCP Checksums over VLANs

2018-09-14 Thread Kurt Jaeger
Hi! > The server NIC is common (I211), so maybe it's easy to reproduce. I'll > help as much as I can, of course. Can you disable all the options of the NIC ? ifconfig igb0 -rxcsum -txcsum -wol -tso4 -vlanmtu -vlanhwtag -vlanhwcsum -vlanhwtso Try to disable everything that can be disabled, e.