The /etc/dgateways file is used by the old routed command to construct a set of potential default gateways. The file comprises a series of lines, each in the following format:
gateway metric
gateway is the name or address of a gateway to be used as a potential default gateway.
metric is a metric indicating the preference weighting of the gateway. 1 is the value to use for highest preference, 15 for the least. If no value is specified, metric will default to the value 1.
There can be a maximum of 128 valid entries in the /etc/dgateways file - additional ones will be ignored, with an error message being displayed. Duplicate gateway names or addresses are not allowed - only the first one encountered in the file will be added by routed to the default gateway table, and the additional ones will produce error messages.
main_router 1 backup_router 2
