Comment 1 for bug 1868617

Here are two different ways i can think of to potentially solve this (i'm not qemu hacker, feel free to correct me or propose a better solution):

 - the spicevmc chardev's "name" parameter could be used to identify the agent numerically (e.g. "vdagent:1" instead of "vdagent")

 - the -device virtserialport could identify whether it is connected via a multiseat PCI bridge (pci-bridge-seat) and group it with the other monitor from there.

Is one of these approaches preferable?