It's Chromium Version 73.0.3683.86 (Official Build) (64-bit)
distributed as a package in OpenBSD 6.5.
Such packets, with the source address of 18.104.22.168.mdns, should never
be produced. (RFC 1112, sec. 6.2: "The IP source address of the outgoing
datagram must be one of the individual addresses corresponding to the