Formatting Rules for IPv6 ‘Allow’ and ‘Deny’ Address Lists

This section describes how to format the strings in the properties that create “allow” and “deny” lists:

• dds.transport.UDPv6.builtin.parent.allow_interfaces_list
• dds.transport.UDPv6.builtin.parent.deny_interfaces_list
• dds.transport.UDPv6.builtin.parent.allow_multicast_interfaces_list
• dds.transport.UDPv6.builtin.parent.deny_multicast_interfaces_list

These properties may contain a list of strings, each identifying a range of interface addresses or an interface name. Interfaces should be specified as comma-separated strings, with each comma delimiting an interface.

The strings can be addresses and patterns in IPv6 notation. They are case-insensitive.

They may contain a wildcard '*' and can expand up to 4 digits in a block. The wildcard must be either leading or trailing (cannot be in the middle of the string). Multiple wildcards can be specified in a single filter, but only one wildcard can be specified per block (between colons). Examples of IPv6 Address Filters shows some examples.

Examples of IPv6 Address Filters

Example Filter	Equivalent Filters	Matches
*:*:*:*:*:*:*:*
FE80::*:*	fe80::*:*,
	Fe80:0:0::*:*
	Fe80:0:0:0:0:0:*:*	FE80:0000:0000:0000:0000:0000:xxxx:xxxx
FE80:aBC::202:2*:*:*2		FE80:0ABC:0000:0000:0202:2xxx:xxxx:xxx2

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