Last Modified: Dec 17, 2025
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
16.1.0, 16.1.1, 16.1.2, 16.1.2.1, 16.1.2.2, 16.1.3, 16.1.3.1, 16.1.3.2, 16.1.3.3, 16.1.3.4, 16.1.3.5, 16.1.4, 16.1.4.1, 16.1.4.2, 16.1.4.3, 16.1.5, 16.1.5.1, 16.1.5.2, 16.1.6, 16.1.6.1, 17.1.0, 17.1.0.1, 17.1.0.2, 17.1.0.3, 17.1.1, 17.1.1.1, 17.1.1.2, 17.1.1.3, 17.1.1.4, 17.1.2, 17.1.2.1, 17.1.2.2, 17.1.3, 17.5.0, 17.5.1, 17.5.1.2, 17.5.1.3, 21.0.0
Opened: Dec 05, 2025 Severity: 3-Major
Some IPv6 packets that contain a destination option header and/or a routing type 2 header are processed by the BIG-IP. A tcpdump on the BIG-IP does not show the packets. The tmm/xnet_rx_stats:cd_empty stat is incremented The tmm/xnet/iavf/per_q_stats:rx_sw_drop might be incremented.
Packets are dropped and not processed.
A platform that utilizes the iavf driver: R2800 R4800 VE with SR-IOV with an Intel 810 NIC IPv6 traffic is sent to the BIG-IP that contains a destination option or routing type 2 header.
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