Answer
Different networks get different DNS zones to avoid name collisions.
Quick Answer
In Docker Enterprise / Swarm environments with split DNS zones, some domain names resolve internally (to internal service IPs) while others resolve externally. Containers need to know which DNS server to query for which domains. Misconfigured DNS split-horizon setups cause containers to get wrong IPs for internal services.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ