LLA_DAD_NSPostDAD_DstAll - check the process when NUT receives invalid DAD
NS(Destination==Allnode)
with same Target address after
sending DAD NS.
All Node
LLA_DAD_NSPostDAD_DstAll.seq [-tooloption ...] -pkt <packetdef> [addrconf=<addrconfname>]
-tooloption : v6eval tool option <packetdef> : packet definition file (v6eval tool option) <addrconfname>: how to configure address on NUT; boot/reboot
detail of v6eval tool option: see perldoc V6evalTool.pm, perldoc V6evalRemote.pm
Reboot NUT or Initialize interface of NUT or Initialize IPv6 stack of NUT.
The following tests are prepared in this test package. See INDEX file.
Test for all node
NUT assignes autoconfigured address, even though NUT receives invalid (Destination==Allnode) DAD NS for same target address as NUT, while DAD Process (after transmitting DAD NS).
Test sequence
TN NUT --------------------------------- Initialize NUT
Configure address of NUT (reboot or interface initialization etc...)
TN wait the DAD NS sent from NUT <=== Judgement #1: DAD NS ======= name: DADNS_from_NUT
==== Action #1: DAD NS =========> name: DADNS_from_TN_DstAll
Wait for DupAddrDetectTransmits*RetransTimer
Check if NUT's address is configured ==== Action #2: DAD NS =========> name: SOLNS_from_TN_SameTgt
<=== Judgement #2: DAD NA ======= name: NA_from_NUT, NA_from_NUT_woTLL
Test for all NODE
NUT performs Stateless Address Autoconfiguration(Link-local) on its interface
Judgement #1. NUT MUST transmit DAD NS for its autoconfigured Link-local address. name: DADNS_from_NUT src: ::0 dst: solnode[NUT's tentative Link-local] TargetAddress: NUT's tentative Link-local
Action #1. TN transmits invalid DAD NS which destined for allnode name: DADNS_from_TN_DstAll src: ::0 dst: allnode TargetAddress: NUT's Link-local
Action #2. TN transmits SOL NS to check if NUT's address is configured name: SOLNS_from_TN_SameTgt src: TN's Link-local dst: solnode[NUT's Link-local] TargetAddress: NUT's Link-local
Judgement #2. NUT MUST transmit SOL NA for its autoconfigured Link-local address. name: NA_from_NUT, NA_from_NUT_woTLL src: NUT's Link-local dst: TN's Link-local TargetAddress: NUT's Link-local RFlag: 0 ( if NUT is a Router then 1) SFlag: 1 OFlag: 1 TLLOPT: NUT's MAC address
RFC2462
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5.4.1. Message Validation
A node MUST silently discard any Neighbor Solicitation or Advertisement message that does not pass the validity checks specified in [DISCOVERY]. A solicitation that passes these validity checks is called a valid solicitation or valid advertisement.
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RFC2461
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4.3. Neighbor Solicitation Message Format
Nodes send Neighbor Solicitations to request the link-layer address of a target node while also providing their own link-layer address to the target. Neighbor Solicitations are multicast when the node needs to resolve an address and unicast when the node seeks to verify the reachability of a neighbor.
0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Type | Code | Checksum | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Reserved | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | | + + | | + Target Address + | | + + | | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Options ... +-+-+-+-+-+-+-+-+-+-+-+-
IP Fields:
Source Address Either an address assigned to the interface from which this message is sent or (if Duplicate Address Detection is in progress [ADDRCONF]) the unspecified address.
Destination Address Either the solicited-node multicast address corresponding to the target address, or the target address.
Hop Limit 255
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detail of v6eval tool option: see perldoc V6evalTool.pm, perldoc V6evalRemote.pm