Difference between revisions of "Troubleshooting DHCP issues"
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might get appended to /var/log/messages and monitoring systems should pick up these as unknown message. The problem can be easily resolved by updating firewall to allow outgoing packets to UDP port 67. | might get appended to /var/log/messages and monitoring systems should pick up these as unknown message. The problem can be easily resolved by updating firewall to allow outgoing packets to UDP port 67. | ||
[[Main Page|Home]] > [[CentOS]] > [[CentOS 6.x]] > [[Dhcp server configuration]] > [[Troubleshooting DHCP issues]] |
Latest revision as of 11:07, 14 July 2022
Home > CentOS > CentOS 6.x > Dhcp server configuration > Troubleshooting DHCP issues
Restrictive firewall issue
DHCP will not work if outgoing packets to UDP port 67 are not allowed in firewall. In such cases messages:
Failed to send 300 byte long packet over fallback interface
might get appended to /var/log/messages and monitoring systems should pick up these as unknown message. The problem can be easily resolved by updating firewall to allow outgoing packets to UDP port 67.
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