"dds.transport.UDPv6.builtin.ignore_loopback_interface"

Currently three values are allowed:

• 0: Forces local traffic to be sent over loopback, even if a more efficient transport (such as shared memory) is installed (in which case traffic will be sent over both transports).

• 1: Disables local traffic via this plugin. Do not use the IP loopback interface even if no NICs are discovered. This is useful when you want applications running on the same node to use a more efficient transport (such as shared memory) instead of the IP loopback.

• -1: Automatic. Lets RTI Connext decide between the above two choices.

The current "automatic" (-1) RTI Connext policy is as follows.

• If a shared memory transport plugin is available for local traffic and there is a locator on the initial peers list that can use shared memory, the effective value is 1 (i.e., disable UDPv6 local traffic).
• Otherwise, the effective value is 0 (i.e., use UDPv6 for local traffic also).

[default] -1 Automatic RTI Connext policy based on availability of the shared memory transport.