480073 FSB Multiple Source DNS Issue: Difference between revisions
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<code class="mwt-code" >SHELL IPCONFIG/ALL</code> | <code class="mwt-code" >SHELL IPCONFIG/ALL</code> | ||
*The response should look like: | *The response should look like: | ||
[[File:Screenshot 2025-11-13 143756.jpg| | [[File:Screenshot 2025-11-13 143756.jpg|center]] | ||
*Notice that the DNS Servers include 8.8.8.8 and 8.8.4.4. These were not in the DNS.DAT. | *Notice that the DNS Servers include 8.8.8.8 and 8.8.4.4. These were not in the DNS.DAT. | ||
*The IPCONFIG utility shows the DNS errors. | *The IPCONFIG utility shows the DNS errors. | ||
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The DNS servers can be updated manually. | The DNS servers can be updated manually. | ||
== Remove DNS Servers == | == Remove DNS Servers == | ||
All DNS servers that are not desired must be removed. | All DNS servers that are not desired must be removed. | ||
*At the APU Change prompt issue the following command | *At the APU Change prompt issue the following command | ||
*shell netsh interface ipv4 delete dnsservers "Ethernet" "dns-server-to-delete" | |||
<code class="mwt-code">shell netsh interface ipv4 delete dnsservers "Ethernet" 8.8.8.8</code> | |||
==Add DNS Servers== | |||
All DNS servers that are not desired must be removed. | |||
*At the APU Change prompt issue the following command | |||
*shell netsh interface ipv4 add dnsservers "Ethernet" "dns-server-to-add" | |||
<code class="mwt-code">shell netsh interface ipv4 add dnsservers Ethernet 8.8.8.8</code> | |||
== Verification == | |||
*Roboot the APU | |||
*Upon reboot, check the network settings | |||
*If the network settings are not maintained, contact [[Comet Support]] | |||
= Resolution = | |||
Check future software release notes for improvements in DNS handling. | |||
Latest revision as of 22:23, 18 November 2025
Summary
This bulletin outlines a DNS-handling issue affecting T10 units running APU software version 5.3.5.6. While the APU102 application correctly pushes DNS settings to the network adapter during network configuration, the Windows operating system may have already assigned DNS servers to the adapter. This results in DNS entries from both the DNS.DAT file on the APU and DNS servers appropriate for the open internet.
Impact
This will present to the user as the APU being unable to resolve URLs.
Affected Products
This issue affects APUs with T10 processors running application software version 5.3.5.6.
Diagnosis
Symptoms:
- Failed hostname lookups
- Failed server authentication
- Reporting/sync delays
- Loss of connectivity in DNS-required networks
Confirmation:
- At the APU Change prompt issue the following command
SHELL IPCONFIG/ALL
- The response should look like:
- Notice that the DNS Servers include 8.8.8.8 and 8.8.4.4. These were not in the DNS.DAT.
- The IPCONFIG utility shows the DNS errors.
Mitigation
The DNS servers can be updated manually.
Remove DNS Servers
All DNS servers that are not desired must be removed.
- At the APU Change prompt issue the following command
- shell netsh interface ipv4 delete dnsservers "Ethernet" "dns-server-to-delete"
shell netsh interface ipv4 delete dnsservers "Ethernet" 8.8.8.8
Add DNS Servers
All DNS servers that are not desired must be removed.
- At the APU Change prompt issue the following command
- shell netsh interface ipv4 add dnsservers "Ethernet" "dns-server-to-add"
shell netsh interface ipv4 add dnsservers Ethernet 8.8.8.8
Verification
- Roboot the APU
- Upon reboot, check the network settings
- If the network settings are not maintained, contact Comet Support
Resolution
Check future software release notes for improvements in DNS handling.