User-specified list of prefix groups to advertise in custom mode.
This field can only be populated if advertise_mode is CUSTOM and
is advertised to all peers of the router.
These groups will be advertised in addition to any specified prefixes.
Leave this field blank to advertise no custom groups.
User-specified list of individual IP ranges to advertise in custom mode.
This field can only be populated if advertise_mode is CUSTOM and
is advertised to all peers of the router.
These IP ranges will be advertised in addition to any specified groups.
Leave this field blank to advertise no custom IP ranges.