dhcpcd-discuss

On 02/06/2018 15:52, JED wrote:
> I hope this is what you wanted. I've long used "ifconfig" but "ip a" is 
> new to me. If it isn't exactly what you need, just ask for more.

This is fine.
So on Linux RUNNING is basically we have a carrier and are ready to go.
UP means the administrator has said the interface is ready to go.

> eth0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
> lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
> wlan0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
> wwan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500

Using the ip tool, if the interface lacks RUNNING then it's tagged as 
NO-CARRIER, which is the inverse of ifconfig.

> 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN 
> 2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast 
> 3: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state 
> 4: wlan1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group 
> 5: wwan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast 

wlan1 is missing from ifconfig output for some reason?
Which interface is claiming no carrier in dhcpcd?

Roy