Connected: An Internet Encyclopedia
4.2.2.3 Unused IP Header Bits: RFC 791 Section 3.1
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4.2.2.3 Unused IP Header Bits: RFC 791 Section 3.1
4.2.2.3 Unused IP Header Bits: RFC 791 Section 3.1
The IP header contains two reserved bits: one in the Type of Service
byte and the other in the Flags field. A router MUST NOT set either
of these bits to one in datagrams originated by the router. A router
MUST NOT drop (refuse to receive or forward) a packet merely because
one or more of these reserved bits has a non-zero value; i.e., the
router MUST NOT check the values of thes bits.
- DISCUSSION
-
Future revisions to the IP protocol may make use of these unused
bits. These rules are intended to ensure that these revisions can
be deployed without having to simultaneously upgrade all routers
in the Internet.
Next: 4.2.2.4 Type of Service: RFC 791 Section 3.1
Connected: An Internet Encyclopedia
4.2.2.3 Unused IP Header Bits: RFC 791 Section 3.1