Chapter 9 • IPv6 Options and Extension Headers 179
Tunnel Encapsulation Limit RFC 2473, Generic Packet Tunneling in
IPv6 Specification.
A tunnel entry-point node may be configured to include a
Tunnel Encapsulation Limit option as part of the informa-
tion prepended to all packets entering a tunnel at that node.
The Tunnel Encapsulaton Limit option is carried in a Destina-
tion Options extension header [IPv6-Spec] placed between the
encapsulating IPv6 header and the IPv6 header of the original
packet. (Other IPv6 extension headers may also be present pre-
ceding or following the Destination Options extension header,
depending on configuration information at the tunnel entry-
point node.)
The Tunnel Encapsulation Limit option specifies how many
additional levels ...