Users Guide

In a dual stack setup, the system sends both A (request for IPv4 — RFC 1035) and AAAA (request for
IPv6 — RFC 3596) record requests to a DNS server even if only the ip name-server command is
configured.
ipv6 nd dad attempts
To perform duplicate address detection (DAD) on an interface, configure the number of neighbor solicitation messages that are
sent.
Syntax
ipv6 nd dad attempts {number of attempts}
To restore the default value, use the no ipv6 nd dad attempts command.
Parameters
number of
attempts
Enter the number of attempts to be made to detect a duplicate address. The range
is from 0 to 15. Setting the value to 0 disables DAD on the interface.
Default 3 attempts
Command Modes INTERFACE (management interface only)
Command
History
This guide is platform-specific. For command information about other platforms, see the relevant Dell
Networking OS Command Line Reference Guide.
Version Description
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.2(1.0) Introduced on the Z9500.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
ipv6 nd prefix
Specify which IPv6 prefixes are included in Neighbor Advertisements.
Syntax
ipv6 nd prefix {ipv6-prefix | prefix-length | default} [no-advertise] |
[no-autoconfig] [no-rtr-address] [off-link] [lifetime {valid | infinite}
{preferred | infinite}]
Parameters
ipv6-prefix Enter an IPv6 prefix.
prefix-length Enter the prefix then the prefix length. The length range is from 0 to 128.
default Enter the keyword default to set default parameters for all prefixes.
no-advertise Enter the keyword no-advertise to prevent the specified prefix from being
advertised.
no-autoconfig Enter the keywords no-autoconfig to disable Stateless Address
Autoconfiguration.
no-rtr-address Enter the keyword no-rtr-address to exclude the full router address from
router advertisements (the R bit is not set).
IPv6 Basics 821