* Pekka Savola:
The justification is simple: any "magic" packets which all routers on
the path must somehow examine and process seems a very dubious concept
when we want to avoid DoS attacks etc.
Any packet with IP options is more or less in that category right now,
so it's a very long way to go.[1] IPv6 seems to make things even
worse. 8-(
1. Some platforms support dropping IPv4 packets with options. As
discussed before, existing contractual obligations with respect to
source routing may prevent you from enabling such a feature.
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