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I heard that the destination address in a packet can't be 0.0.0.0.

Is there any IP address (including special ones) which can't be the source address in a packet?

Thanks.

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    The answer to your "invalid destination address" question has the definitive answer to invalid sources as well. networkengineering.stackexchange.com/a/57958
    – jonathanjo
    Mar 25, 2019 at 11:59
  • Did any answer help you? If so, you should accept the answer so that the question doesn't keep popping up forever, looking for an answer. Alternatively, you can provide and accept your own answer.
    – Ron Maupin
    Dec 15, 2019 at 1:16

3 Answers 3

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Multicast addresses cannot be the source address of a packet.

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Only unicast ip addresses can be the source address of a packet . In IPv4 class A B C are unicast addresses . Class D addresses are multicast and cannt use as source ip address

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    Network classes are dead (please let them rest in peace), killed in 1993 (probably before you were born) by RFCs 1517, 1518, and 1519, which defined CIDR (Classless Inter-Domain Routing). modern networking does not use network classes.
    – Ron Maupin
    Mar 28, 2019 at 22:01
  • What is the range of unicast addresses in ipv4 ?? Mar 29, 2019 at 9:29
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Multicast Ip addresses or class d ip addresses cannot be source ip addresses. 224.0.0.0 - 239.255.255.255

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    Network classes are dead, killed in 1993 by RFCs 1517, 1518, and 1519, which defined CIDR (Classless Inter-Domain Routing). Modern networking does not use network classes.
    – user36472
    Mar 29, 2019 at 11:45

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