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tcpdump抓包dns请求报错bad udp cksum的解决办法

2016-12-01
The followign two commands switched off all types of offloading.

Code:
$ ethtool --offload  eth0  rx off  tx off
$ ethtool -K eth0 gso off
Here is the output of ethtool before disabling TCO:

Code:
$ ethtool --show-offload  eth0
Offload parameters for eth0:
rx-checksumming: on
tx-checksumming: on
scatter-gather: on
tcp-segmentation-offload: on
udp-fragmentation-offload: off
generic-segmentation-offload: on
generic-receive-offload: off
large-receive-offload: off
ntuple-filters: off
receive-hashing: off
Here it is after running aforementioned commands:

Code:
$ ethtool --show-offload  eth0
Offload parameters for eth0:
rx-checksumming: off
tx-checksumming: off
scatter-gather: off
tcp-segmentation-offload: off
udp-fragmentation-offload: off
generic-segmentation-offload: off
generic-receive-offload: off
large-receive-offload: off
ntuple-filters: off
receive-hashing: off

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