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Bug #12460

closed

Unbound falls back to using all outgoing network interfaces if manually selected outgoing interface(s) are unavailable

Added by Viktor Gurov about 3 years ago. Updated almost 3 years ago.

Status:
Resolved
Priority:
Normal
Assignee:
Viktor Gurov
Category:
DNS Resolver
Target version:
2.6.0
Start date:
Due date:
% Done:

100%

Estimated time:
Plus Target Version:
22.01
Release Notes:
Default
Affected Version:
2.5.2
Affected Architecture:

Description

How to reproduce:

1) Configure OpenVPN client and assign OpenVPN interface
2) Select OpenVPN interface in `Outgoing Network Interfaces`
3) Now if OpenVPN client is disconnected, DNS Resolver creates unbound.conf without outgoing-interface: entries, i.e. outgoing interfaces = All
4) This can lead to a DNS leak

Possible solution:
- Disable forwarding and recursion ( local-zone: "." refuse ) in such case

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