I had been in contact with him too. I sent some errata entries for his excellent book on pf and he acknowledged these fixes. On november 12, he mentioned on a private email that these fixes will be added to his checklist for the 3rd edition of the book.
Never asked him about his health, however. On the second edition of his book he acknowledges doctors Markiewicz and Misiewicz for looking at his health issues. Don't know why it is ill and, I said, never asked him... just I believe that it is not appropriate. But, as a lot of people here, I am certainly worried about him. He is a kindly member of the OpenBSD community. Hope he is fine, Igor.
