Reassigning ppp0 metric value away from 0

End-of-Life Product 3G-4G/LTE Base Shield
1

I’m currently attempting to assign a Interface Metric that isn’t 0 to the ppp0 interface, and haven’t been able to locate a point at which it can be changed within the boot up scripts, config files or services.

Is there a way to do so, or is this something that is a fixed value? The goal was to have the device use ppp0 if it is disconnected from any fixed networks, but otherwise utilise the eth0 interface.

So far tested:

  • dhcpcd.conf assignment of metrics
  • Start after ppp-dns.service for networking.service
2

Further checks have been made, and the metrics can be altered post boot through use of ifmetric, and this then works as anticipated until the device is rebooted or undergoes a hard reset.

Are there ways to make this operation occur at boot and after all other operations have already run?