Force AttachXDP to overwrite an already attached program

[FHRNet]

Hi,

Generally when one uses link.AttachXDP the call will error out if there's an XDP program already bound to the interface (for example, if a program was pinned during previous execution)

l, err := link.AttachXDP(link.XDPOptions{
	Program:   objs.Filter,
	Interface: iface.Index,
	Flags:     link.XDPDriverMode,
})

// err => failed to attach link: create link: file exist

Is there a way to make AttachXDP forcibly overwrite the attached program without having to unload it first?

Some network cards/drivers struggle and misbehave if you completely unload an XDP program and load in a new one under load (can cause the device to reset/hang etc), I'm thinking simply updating the program instead would lessen the impact during software updates.