IPv6 Unkown header extension
paul at wcclan.net
Sun Dec 19 20:37:37 UTC 2010
every once in a while I see the following messages filling the logs on my FreeBSD installations:
IPFW2: IPV6 - Unknown Extension Header(128), ext_hd=0
I am somewhat curious why this message occurs. Did I configure something wrong, Is there an implementation defect in an existing ipv6 stack that these packets try to abuse or is this part of an OS fingerprinting technique or something?
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