Last Modified: Jul 18, 2026
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
11.5.1, 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, 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, 11.5.4 hf3, 11.5.4 hf4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10, 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, 11.6.1 hf2, 11.6.2, 11.6.2 hf1, 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
Fixed In:
12.0.0
Opened: Feb 26, 2015 Severity: 2-Critical
In 11.5.x and earlier versions it was possible to have a SPDY profile with the following combination of settings: activate-mode always, and protocol-versions { spdy3 spdy2 http1.1 }. In 11.6.0 this was changed to allow only a single protocol-version in conjunction with 'activation-mode always'.
This might cause a failure when upgrading from prior versions to 11.6.0 or later.
A SPDY profile with activate-mode always and multiple protocol versions for protocol-versions.
Before upgrading make sure all SPDY profiles with 'activation-mode always' only have a single 'protocol-versions' value set.
A SPDY profile with 'activation-mode always' and multiple 'protocol-versions' no longer causes an upgrade to fail. Instead upgrade changes the profile such that the 'protocol-versions' field only contains the highest SPDY protocol version that was listed before the upgrade.