Reference Guide
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, refer to the 
relevant 
FTOS Command Line Reference Guide
.
The following is a list of the FTOS version history for this command.
Version 8.3.19.0 Introduced on the S4820T.
Version 8.3.11.1 Introduced on the Z9000.
Version 8.3.7.0 Introduced on the S4810.
ipv6 nd prefix
Specify which IPv6 prefixes are included in Neighbor Advertisements.
S4820T
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).
off-link Enter the keywords off-link to advertise the prefix without stating 
to recipients that the prefix is either on-link or off-link.
valid-lifetime
 | 
infinite
Enter the amount of time that the prefix is advertised, or enter 
infinite for an unlimited amount of time. The range is from 0 to 
4294967295. The default is 2592000. The maximum value means that 
the preferred lifetime does not expire for the valid-life time parameter.
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