Last Modified: Sep 13, 2023
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
11.5.1 HF1, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.1 HF10, 11.5.1 HF11, 11.5.2 HF1, 11.5.3 HF1, 11.5.3 HF2, 11.5.4 HF1, 11.5.4 HF2, 11.6.0, 11.6.1, 11.6.2, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3, 12.0.0, 12.0.0 HF1, 12.1.0 HF1, 12.0.0 HF2, 12.1.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2
Fixed In:
12.1.0, 11.6.1 HF1, 11.5.4 HF3
Opened: Jun 18, 2015 Severity: 3-Major Related Article:
K04711825
In a Standard virtual server, a data segment will be retransmitted when an ICMP Type 3, Code 4, message with an MTU (greater than or equal to 0) is received. The retransmission occurs until there are no ICMP Type 3, Code 4 messages, a connection times out, or an ACK is received.
Packets might fill up the pipe and cause a minor outage.
Router or client sends ICMP frag messages with random MTU values. It can be increasing, decreasing, same, or 0 MTU.
None.
TCP drops the second or later ICMP Type 3, Code 4 message. If the second packet is a valid ICMP packet, the downstream router will send another ICMP Type 3, Code 4 message.