Last Modified: Apr 28, 2025
Affected Product(s):
BIG-IP PEM
Known Affected Versions:
11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8, 11.6.1, 11.6.1 HF1, 12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2
Fixed In:
13.0.0, 12.1.2, 11.6.1 HF2
Opened: Aug 02, 2016 Severity: 3-Major Related Article:
K48561135
When the BIG-IP system is configured in Forwarding mode, the BIG-IP system drops the renewal ACK message from the server in response to unicast renewal message from DHCP clients.
Unicast DHCP renewal requests are not responded to with ACKs. DHCP clients will send broadcast renewal messages and will receive ACK from servers.
-- BIG IP system configured in forwarding mode. -- DHCP clients sending unicast renewal message to DHCP server.
None.
After being unable to receive ACK responses from DHCP servers for unicast DHCP renewal messages, the DHCP client will send broadcast DHCP renewal messages and receive an ACK from the DHCP server and ACKs forwarded by the BIG-IP system and received by DHCP clients.