On Mon, Mar 23, 2026 at 07:15:36PM +0100, Laurent Vivier wrote:
> On 3/23/26 19:01, Laurent Vivier wrote:
> > iPXE, however, does not negotiate GUEST_CSUM, ignores the DATA_VALID
> > flag entirely, and always verifies checksums. This caused TCP
> > connections to fail: the SYN-ACK had a zero TCP checksum, iPXE rejected
> > it, and the connection timed out in SYN_RCVD.
> 
> And if you're wondering who's behind this laziness, check the author's name...
> 
> https://gitlab.com/qemu-project/ipxe/-/blob/master/src/drivers/net/virtio-net.c?ref_type=heads#L8

Aw man, not that guy!

-- 
David Gibson (he or they)	| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you, not the other way
				| around.
http://www.ozlabs.org/~dgibson