kriegsmanj opened a new issue, #9003:
URL: https://github.com/apache/cloudstack/issues/9003
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##### ISSUE TYPE
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* Bug Report
##### COMPONENT NAME
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Categorize the issue, e.g. API, VR, VPN, UI, etc.
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VR / Isolated network
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##### CLOUDSTACK VERSION
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New line separated list of affected versions, commit ID for issues on main
branch.
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4.18.1.1
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##### CONFIGURATION
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Information about the configuration if relevant, e.g. basic network,
advanced networking, etc. N/A otherwise
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Global setting:
use.external.dns = false
##### SUMMARY
<!-- Explain the problem/feature briefly -->
When setting 'use.external.dns' is set to false, I expect to only receive
the internal (VR) IP as DNS server.
However, it returns both internal + external DNS servers.
Providing external DNS servers is addition to the internal gives problems
resolving instances hostnames in the same isolated network as these mappings
are not available in external dns servers.
##### STEPS TO REPRODUCE
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test-case. Use Screenshots if accurate.
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<!-- Paste example playbooks or commands between quotes below -->
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Set 'use.external.dns' to true
Restart isolated network with cleanup
~~~
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Set 'use.external.dns' to false
Restart isolated network with cleanup
~~~
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##### EXPECTED RESULTS
<!-- What did you expect to happen when running the steps above? -->
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With setting on true:
External DNS provided by DHCP (file /etc/dnsmasq.conf on VR)
dhcp-option=6,<external_dns_ip_1>,<external_dns_ip_2>
~~~
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With setting on false:
Internal DNS provided by DHCP (file /etc/dnsmasq.conf on VR)
dhcp-option=6,<virtual_router_ip>
~~~
##### ACTUAL RESULTS
<!-- What actually happened? -->
<!-- Paste verbatim command output between quotes below -->
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With setting on true:
External DNS provided by DHCP (file /etc/dnsmasq.conf on VR)
dhcp-option=6,<external_dns_ip_1>,<external_dns_ip_2>
~~~
~~~
With setting on false:
Internal + External DNS provided by DHCP (file /etc/dnsmasq.conf on VR)
dhcp-option=6,<virtual_router_ip>,<external_dns_ip_1>,<external_dns_ip_2>
~~~
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