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FYI - on new NICs, turn off checksum offload!

PostPosted: Sun Jun 03, 2007 1:17 pm
by ack
You can find it in device manager, under the network card's advanced tab.

I haven't confirmed this will fix it in Vista, but it looks to be a problem with Winpcap not being able to see the packet properly when offloading is used.

On some cards, checksum offloads are split into IP, TCP and UDP, and I believe, it's either TCP or UDP, depending on which is used with GIT. But on most NICs, it should just be one option - all or nothing, so-to-speak.