I was surprised when I found that Solaris 11 scanning works now. I
thought that it would require a change in the defines around
pcap_selectable_fd_valid, because it's valid for Solaris 10 and earlier
but not for Solaris 11. Why it started working was the
pcap_selectable_fd_one_to_one test added in r28319. As a side effect of
that function overrides pcap_selectable_fd_valid for all Solaris
releases, it makes changes in pcap_selectable_fd_valid unnecessary.
However it is indirect in the way it does it, so I'm adding a comment
explaining the situation and a hope that there is an easy change to make
pcap_selectable_fd_valid correct on its own.