In the general case, a correct response to a source-routed datagram traverses the same route.

A router MUST be able to act as the final destination of a source route.

DISCUSSION: If a source-routed datagram is fragmented, each fragment will contain a copy of the source route.

(26) Loose Source Route Mobile IP and some multicasting may require this.

(26) Loose Source Route Mobile IP and some multicasting may require

Some applications in the router MAY require that the user be able to enter a source route.

Immediate Destination Address - the ultimate destination address, except in source routed packets, where it is the next address specified in the source route

If a router receives a packet containing a completed source route, the packet has reached its final destination.

Suppose a source routed datagram is to be routed from host S to host D via gateways G1, G2, ...

Section 3.3.5 presents the rules for a host acting as an intermediate hop in a source route, i.e., forwarding a source-routed datagram.

Section 3.3.5 presents the rules for a host acting as an intermediate hop in a source route, i.e., forwarding Internet Engineering Task Force [Page 36]

In other words, the router or host at the remote end of the line is the destination of the packet or is the next step in the source route of a source routed packet.

DISCUSSION: In other words, the router or host at the remote end of the line is the destination of the packet or is the next step in the source route of a source routed packet.

This reversed source route MUST be inserted into datagrams they originate (see [INTRO:2] for details) when the router is unaware of policy constraints.