Troubleshooting Tip: FortiGate fails to resolve FQDN after upgrade to 7.6.0

[kaurg_FTNT]

Description	The article describes how to resolve a known issue with FortiOS 7.6.0 where domain resolution fails.
Scope	FortiOS 7.6.0
Solution	After upgrading to 7.6.0, FortiGate fails to resolve the FQDN. The use of secondary dns-database zones can cause dnsproxy signal 31 crashes. The workaround is to change dns-database's zone to the Primary type.  The issue will be resolved in release 7.6.1. Refer to this guide for the configuration: Basic DNS server configuration example | FortiGate / FortiOS 7.6.0 | Fortinet Document Library