Thanks again, Yuri. I'm still having problems. As a reminder, I'm on Raspbian which only has a 1.6.0 stable package.
I downloaded and built the 1.9.1 source code from here: http://www.unbound.net/downloads/unbound-1.9.1.tar.gz The build is verified as Version 1.9.1. It works fine (exactly as on 1.6.0 and 1.9.2) WITHOUT the "tls-cert-bundle" keyword. With the "tls-cert-bundle" keyword, I continue to get this error and nothing works. It appears that unbound doesn't recognize the "tls-cert-bundle" keyword: pr 2 15:06:51 raspberrypi_pi-hole systemd[1]: Started Unbound DNS server via resolvconf. Apr 2 15:06:51 raspberrypi_pi-hole unbound[27172]: /etc/unbound/unbound.conf.d/tls-cert-bundle.conf:4: error: unknown keyword 'tls-cert-bundle' Apr 2 15:06:51 raspberrypi_pi-hole unbound[27172]: /etc/unbound/unbound.conf.d/tls-cert-bundle.conf:4: error: stray ':' Apr 2 15:06:51 raspberrypi_pi-hole unbound[27172]: /etc/unbound/unbound.conf.d/tls-cert-bundle.conf:4: error: stray '"' Apr 2 15:06:51 raspberrypi_pi-hole unbound[27172]: /etc/unbound/unbound.conf.d/tls-cert-bundle.conf:4: error: unknown keyword '/etc/ssl/certs/ca-certificates.crt' Apr 2 15:06:51 raspberrypi_pi-hole unbound[27172]: /etc/unbound/unbound.conf.d/tls-cert-bundle.conf:4: error: stray '"' Apr 2 15:06:51 raspberrypi_pi-hole unbound[27172]: read /etc/unbound/unbound.conf failed: 5 errors in configuration file Apr 2 15:06:51 raspberrypi_pi-hole unbound[27172]: [1554242811] unbound[27172:0] fatal error: Could not read config file: /etc/unbound/unbound.conf Yuri yvoinov at gmail.com Tue Apr 2 21:43:19 CEST 2019 Previous message (by thread): TLS certificate question about Unbound 1.9.2 You're welcome :) And make sure you really installed built binaries.
