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Log Reference

AR500, AR510, and AR530 V200R007

This document supports all the logs of device, including the parameters, meaning, possible causes and solution.

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DHCP/4/DHCPv6_CHECK_PREFIX_LENGTH: The delegated prefix [STRING1] is too small to allocate all of its interfaces. (Delegated prefix = [STRING2]/[INTEGER1], Required prefix length = [INTEGER2])


The delegated prefix [STRING1] is too small to assign IP addresses to all of its interfaces. (Delegated prefix = [STRING2]/[INTEGER1], Required prefix length = [INTEGER2])


The AR502G-L-D-H, AR502GR-L-D-H and AR510 series do not support this log.


Parameter Name Parameter Meaning
[STRING1] Name of the delegated prefix.
[STRING2] Prefix of the address assigned by the server.
[INTEGER1] Prefix length of the address assigned by the server.
[INTEGER2] Expected prefix length of the address.

Possible Causes

The DHCPv6 PD client receives the IPv6 address prefix from the server and compares the prefix length of the IPv6 address with the associated address. If the associated address has a smaller prefix length, the device generates a log.


  • This log message is informational only, and no action is required.
Updated: 2019-05-29

Document ID: EDOC1000097294

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