Comment # 6 on bug 1078807 from Bernhard Wiedemann

I cannot remember... I just thought that if you call it, it might want to use
the output in some ways.
Otherwise you could also add a 2>/dev/null to avoid this confusion.


https://github.com/yast/yast-installation/blob/606b9c16f8ee8282b979c152996e74acccd09064/startup/common/network.sh#L24

shows 'ip' used in is_iface_up and in list_ifaces functions