Yeah I forgot about those

bFindFreePeers
and
bNotif*****Peers

(I think)

One of them supresses the version messages (i.e. doesn't send it out). This was needed for me during development, so I can test a new version on the public network without having everyone get the message.

Unfortunately, I might have deleted the code that actually checks these variables (this is certainly true in Defender, which has a different opaque message format). I'm not sure though, you should try it and find out.