A dynamic BFD for DHCPv6 session flaps.

Trouble Ticket Number

DTS2024102204953

Symptom

A dynamic BFD for DHCPv6 session flaps.

Condition

There is a high probability that this problem occurs when the following conditions are met:

1. BFD for DHCPv6 is enabled on an interface.

2. The device has a default route to this interface.

Impact

The dynamic BFD for DHCPv6 session is unavailable.

Severity

Major

Root Cause

After the BFD for DHCPv6 session goes Up through negotiation, the source and destination IP addresses of BFD packets are incorrectly updated. As a result, the BFD session flaps.

Solution

The system has been disabled from updating the source and destination IP addresses of BFD packets after a BFD for DHCPv6 session is created.

Solution Impact

None

Problem Resolved in

V300R023C00SPC100,V300R023C10SPC100

Involved Models

AR600, AR6100, AR6200, AR6300, RU-5G

Precaution

None