Last Modified: May 14, 2019
Affected Product:
See more info
BIG-IP LTM
Known Affected Versions:
11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 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, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 11.5.4, 11.5.4 HF1, 11.5.4 HF2, 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, 12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4
Fixed In:
12.1.0, 11.6.1 HF1, 11.5.4 HF3
Opened: Jun 18, 2015
Severity: 3-Major
Related AskF5 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.