RFC 1349:Type of Service in the Internet Protocol ...
RFC-Ref

Redirect message


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... IP datagrams it originates. Sections 6 and 7 describe the ICMP Destination Unreachable and Redirect messages and how TOS affects path choice by both hosts ...


... TOS facility affects the origination and interpretation of ICMP Redirect messages and certain types of ICMP Destination Unreachable messages. This memo does not define any new extensions to the ICMP ...
... The ICMP Redirect message also includes a code, which specifies the class of datagrams ...



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