Adguard DHCP server or local REWRITE doesn't work if no internet.

[keshabit]

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Prerequisites

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• [x] I am running the latest version
• [x] I checked the documentation and found no answer
• [x] I checked to make sure that this issue has not already been filed

Issue Details

Adguard DHCP server or local REWRITE doesn't work if no internet.

• Version of AdGuard Home server:
  • <-- v0.108.0-b.7 -->
• How did you install AdGuard Home:
  • <-- GitHub releases -->
• How did you setup DNS configuration:
  • <-- System -->
• If it's a router or IoT, please write device model:
  • <-- VMWare VM -->
• CPU architecture:
  • <-- x86 -->
• Operating system and version:
  • <-- Debian 5.10.106-1 -->

Expected Behavior

Actual Behavior

Screenshots

Screenshot:

Additional Information

[ainar-g]

Merging into #4825.