It turns out at least one affected non-PTZOptics camera sends network change messages at more times than just startup -- perhaps every ten minutes, or after ten minutes of inactivity, not clear which. So we need to accept and discard them whenever they arrive.
It turns out at least one affected non-PTZOptics camera sends network change messages at more times than just startup -- perhaps every ten minutes, or after ten minutes of inactivity, not clear which. So we need to accept and discard them whenever they arrive.