On Mon, Aug 3, 2020 at 3:53 AM ToddAndMargo via users <users@xxxxxxxxxxxxxxxxxxxxxxx> wrote: > On 2020-08-02 16:30, Ed Greshko wrote: >> On 2020-08-03 07:10, ToddAndMargo via users wrote: >>> On 2020-08-01 19:42, Samuel Sieb wrote: >>>> On 8/1/20 7:20 PM, ToddAndMargo via users wrote: >>>>> >>>>> Is there a way to get nmcli to tell you if an interface >>>>> is a gateway like you can with `netstat -rn`? >>>> >>>> Very related to the previous question. >>>> >>>> # nmcli --fields IP4.GATEWAY d show wlo1 >>>> IP4.GATEWAY: 10.0.1.1 >>>> >>>> # nmcli --fields IP4.GATEWAY d show lo >>>> IP4.GATEWAY: -- >>> >>> Uh Oh! >>> >>> This tells me "what" the gateway is, but not >>> "if" the device is a gateway: >>> >>> $ netstat -rn | grep eno2 >>> 0.0.0.0 192.168.250.1 0.0.0.0 UG 0 0 0 eno2 >>> 192.168.250.0 0.0.0.0 255.255.255.0 U 0 0 0 eno2 >>> >>> $ nmcli device show eno2 >>> GENERAL.DEVICE: eno2 >>> GENERAL.TYPE: ethernet >>> GENERAL.HWADDR: AC:1F:6B:62:10:07 >>> GENERAL.MTU: 1500 >>> GENERAL.STATE: 100 (connected) >>> GENERAL.CONNECTION: eno2 >>> GENERAL.CON-PATH: /org/freedesktop/NetworkManager/ActiveCo >>> nnection/5 >>> WIRED-PROPERTIES.CARRIER: on >>> IP4.ADDRESS[1]: 192.168.250.135/24 >>> IP4.GATEWAY: 192.168.250.1 >>> IP4.ROUTE[1]: dst = 192.168.250.0/24, nh = 0.0.0.0, mt >>> = 0 >>> IP4.ROUTE[2]: dst = 0.0.0.0/0, nh = 192.168.250.1, mt >>> = 0 >>> IP4.DNS[1]: 127.0.0.1 >>> IP6.ADDRESS[1]: fe80::ae1f:6bff:fe62:1007/64 >>> IP6.GATEWAY: -- >>> IP6.ROUTE[1]: dst = fe80::/64, nh = ::, mt = 100 >>> IP6.ROUTE[2]: dst = ff0 >> >> I don't know what you're trying to determine. >> >> Are you thinking that the G in the netstat output means the >> interface is a Gateway? It doesn't. The U means the "route" is >> valid and the G means the "route" is to a gateway rather than a >> directly connected network or host. > > I did not state my question very well. My Bad. > > I am not after what the gateway address is, but rather > > 1) if gateway is up or not > > 2) if my device connected to the gateway that is up > > Note that in this instance, if my device is down, > it is also not connected to a gateway. > > I was after a way to get nmcli to also give > me this information. > > man netstat: > > --route, -r > Display the kernel routing tables. > > --numeric, -n > Show numerical addresses instead of trying to determine symbolic > host, > port or user names. > > man route: > Flags Possible flags include > U (route is up) > H (target is a host) > G (use gateway) > R (reinstate route for dynamic routing) > D (dynamically installed by daemon or redirect) > M (modified from routing daemon or redirect) > A (installed by addrconf) > C (cache entry) > ! (reject route) > > $ route -n | grep -i eno2 > 0.0.0.0 192.168.250.1 0.0.0.0 UG 0 0 0 eno2 > 192.168.250.0 0.0.0.0 255.255.255.0 U 0 0 0 eno2 > > > $ netstat -rn | grep -i eno2 > 0.0.0.0 192.168.250.1 0.0.0.0 UG 0 0 0 > eno2 > 192.168.250.0 0.0.0.0 255.255.255.0 U 0 0 0 > eno2 > > $ ifconfig eno2 | grep "inet " > inet 192.168.250.135 netmask 255.255.255.0 broadcast > 192.168.250.255 > > $ nmcli connection down eno2 > Connection 'eno2' successfully deactivated (D-Bus active path: > /org/freedesktop/NetworkManager/ActiveConnection/5) > > $ route -n | grep -i eno2 > <nothing> > > $ netstat -rn | grep -i eno2 > <nothing> "resolvectl query _gateway" will tell you that the gateway's set to X ip address, but only if you have "myhostname" in "nsswitch.conf". You can only check whether the gateway's up with "ping". If you mean that you want to check whether the NIC's up and you don't want to trust nmcli's "GENERAL.STATE" property, you can check "/sys/class/net/ens3/carrier" and/or "/sys/class/net/ens3/operstate". _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx
