Cisco Bug: CSCvh79433 - C9400: "kernel: ICMPv6: NA: someone advertises our address" seen when neighbor bootup
Oct 30, 2019
- Cisco Catalyst 9400 Series Switches
Known Affected Releases
Symptom: Below message is seen intermittently on the sup even if the IPv6 is not enabled for the SUP: *Jan 30 23:25:19.358 PST: %IOSXE-4-PLATFORM: R0/0: kernel: ICMPv6: NA: someone advertises our address fe80:0000:0000:0000:02a0:c9ff:fe00:0020 on mgmtbr! This message is harmless and has no functional impact. It should be ignored until it gets fixed Conditions: When neighbor switches boot up or reload, the following message might be seen. "neighbor" means switches connected to the same subnet as the g0/0 management port.
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Bug Details Include
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