The earliest recollection of this bug is traced back to PAN-OS 10.1.11 - June 11, 2025. This bug is fixed in PAN-OS versions 10.1.11-h5. Fixed an issue where DNS resolution failed on platforms that obtained DNS server IP addresses from DHCP. DNS resolution may fail if DNS server IP is obtained through DHCP. Workaround: Configure the DNS server with a static IP or renew the DHCP IP when you see the issue. This issue affects PAN-OS 10.1.11-h4 only. For more information: https://docs.paloaltonetworks.com/pan-os/10-1/pan-os-release-notes/pan-os-10-1-11-known-and-addressed-issues/pan-os-10-1-11-h5-addressed-issues https://docs.paloaltonetworks.com/pan-os/10-1/pan-os-release-notes/pan-os-10-1-11-known-and-addressed-issues/pan-os-10-1-11-known-issues https://docs.paloaltonetworks.com/pan-os/10-1/pan-os-release-notes/pan-os-10-1-12-known-and-addressed-issues/pan-os-10-1-12-known-issues https://docs.paloaltonetworks.com/pan-os/10-1/pan-os-release-notes/pan-os-10-1-13-known-and-addressed-issues/pan-os-10-1-13-known-issues https://docs.paloaltonetworks.com/pan-os/10-1/pan-os-release-notes/pan-os-10-1-14-known-and-addressed-issues/pan-os-10-1-14-known-issues