On Thu, 2018-01-18 at 19:20 +0100, Ana Rodriguez Lopez wrote:
> Hi Thomas,
>
> could have been, but the cable is connected :-)
>
> I can see also on the other side of the cable (my PC) when I
> disconnect
> and connect the cable:
>
> [274579.667313] usb 1-1.2: new full-speed USB device number 38 using
> ehci-pci
> [274579.779275] usb 1-1.2: New USB device found, idVendor=0525,
> idProduct=a4a2
> [274579.779295] usb 1-1.2: New USB device strings: Mfr=1, Product=2,
> SerialNumber=0
> [274579.779299] usb 1-1.2: Product: RNDIS/Ethernet Gadget
> [274579.779303] usb 1-1.2: Manufacturer: Linux 4.13.0 with at91_udc
> [274579.785787] cdc_subset: probe of 1-1.2:1.0 failed with error -22
> [274579.787109] cdc_ether 1-1.2:1.0 usb0: register 'cdc_ether' at
> usb-0000:00:1a.0-1.2, CDC Ethernet Device, 8e:8e:76:6c:34:0e
> [274579.811909] cdc_ether 1-1.2:1.0 enp0s26u1u2: renamed from usb0
> [274579.862089] IPv6: ADDRCONF(NETDEV_UP): enp0s26u1u2: link is not
> ready
>
>
> I tried to set usb0 in /etc/network/interfaces
>
> auto usb0
> iface usb0 inet dhcp
>
> and the connection is there!
>
> 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
> group default qlen 1000
> link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
> inet 127.0.0.1/8 scope host lo
> valid_lft forever preferred_lft forever
> inet6 ::1/128 scope host
> valid_lft forever preferred_lft forever
> 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast
> state UP group default qlen 1000
> link/ether 8c:8e:76:00:44:bb brd ff:ff:ff:ff:ff:ff
> inet 192.168.1.101/24 brd 192.168.1.255 scope global dynamic eth0
> valid_lft 86230sec preferred_lft 86230sec
> inet6 fe80::d475:83ed:251b:3c19/64 scope link
> valid_lft forever preferred_lft forever
> 3: sit0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN group default
> qlen 1000
> link/sit 0.0.0.0 brd 0.0.0.0
> 4: usb0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast
> state UP group default qlen 1000
> link/ether 8e:8e:76:28:44:ab brd ff:ff:ff:ff:ff:ff
> inet 169.254.7.90/16 brd 169.254.255.255 scope link usb0:avahi
> valid_lft forever preferred_lft forever
> inet6 fe80::8c8e:76ff:fe28:44ab/64 scope link
> valid_lft forever preferred_lft forever
>
> Jan 18 17:37:42 D130102 NetworkManager[756]: <trace>
> [1516297062.4830]
> ethtool[4]: ETHTOOL_GLINK, usb0: success
> Jan 18 17:37:42 D130102 NetworkManager[756]: <debug>
> [1516297062.5000]
> device[0x6bc788] (usb0): constructed (NMDeviceEthernet)
> Jan 18 17:37:42 D130102 NetworkManager[756]: <debug>
> [1516297062.5011]
> device[0x6bc788] (usb0): start setup of NMDeviceEthernet, kernel
> ifindex 4
> Jan 18 17:37:42 D130102 NetworkManager[756]: <debug>
> [1516297062.5022]
> platform-linux: error reading net:/sys/class/net/usb0/phys_port_id:
> error reading 4096 bytes from file descriptor: Operation not
> supported
> Jan 18 17:37:42 D130102 NetworkManager[756]: <debug>
> [1516297062.5031]
> platform-linux: sysctl: reading 'net:/sys/class/net/usb0/dev_id':
> '0x0'
> Jan 18 17:37:42 D130102 NetworkManager[756]: <trace>
> [1516297062.5038]
> ethtool[4]: ETHTOOL_GDRVINFO, usb0: success
> Jan 18 17:37:42 D130102 NetworkManager[756]: <trace>
> [1516297062.5044]
> ethtool[4]: ETHTOOL_GLINK, usb0: success
> Jan 18 17:37:42 D130102 NetworkManager[756]: <debug>
> [1516297062.5048]
> device[0x6bc788] (usb0): hw-addr: hardware address now
> 8E:8E:76:28:44:AB
> Jan 18 17:37:42 D130102 NetworkManager[756]: <debug>
> [1516297062.5052]
> device[0x6bc788] (usb0): hw-addr: update initial MAC address
> 8E:8E:76:28:44:AB
> Jan 18 17:37:42 D130102 NetworkManager[756]: <trace>
> [1516297062.5057]
> ethtool[4]: ETHTOOL_GPERMADDR, usb0: success
> Jan 18 17:37:42 D130102 NetworkManager[756]: <debug>
> [1516297062.5229]
> device[0x6bc788] (usb0): hw-addr: unable to read permanent MAC
> address
> (use current: 8E:8E:76:28:44:AB)
> Jan 18 17:37:42 D130102 NetworkManager[756]: <info>
> [1516297062.5235]
> device (usb0): link connected
> Jan 18 17:37:42 D130102 NetworkManager[756]: <trace>
> [1516297062.5240]
> ethtool[4]: ETHTOOL_GSET, usb0: failed: Operation not supported
> Jan 18 17:37:42 D130102 NetworkManager[756]: <debug>
> [1516297062.5244]
> device[0x6bc788] (usb0): carrier is ON
> Jan 18 17:37:42 D130102 NetworkManager[756]: <debug>
> [1516297062.5266]
> device[0x6bc788] (usb0): unmanaged: flags set to
> [platform-init,!loopback=0x10/0x18/unmanaged/unrealized, set-managed
> [loopback=0x8])
> Jan 18 17:37:42 D130102 NetworkManager[756]: <debug>
> [1516297062.5272]
> device[0x6bc788] (usb0): unmanaged: flags set to
> [platform-init,user-udev,!loopback=0x410/0x418/unmanaged/unrealized,
> set-unmanaged [user-udev=0x400])
> Jan 18 17:37:42 D130102 NetworkManager[756]: <debug>
> [1516297062.5276]
> device[0x6bc788] (usb0): unmanaged: flags set to
> [platform-init,user-settings,user-
> udev,!loopback=0x450/0x458/unmanaged/unrealized,
> set-unmanaged [user-settings=0x40])
> Jan 18 17:37:42 D130102 NetworkManager[756]: <debug>
> [1516297062.5280]
> device[0x6bc788] (usb0): unmanaged: flags set to
> [user-settings,user-udev,!loopback,!platform-
> init=0x440/0x458/unmanaged/unrealized,
> set-managed [platform-init=0x10])
> Jan 18 17:37:42 D130102 NetworkManager[756]: <debug>
> [1516297062.5288]
> device[0x6bc788] (usb0): unmanaged: flags set to
> [user-settings,user-udev,!sleeping,!loopback,!platform-
> init=0x440/0x459/unmanaged/unrealized,
> set-managed [sleeping=0x1])
> Jan 18 17:37:42 D130102 NetworkManager[756]: <info>
> [1516297062.6257]
> manager: (usb0): new Ethernet device
> (/org/freedesktop/NetworkManager/Devices/4)
> Jan 18 17:37:42 D130102 NetworkManager[756]: <debug>
> [1516297062.6640]
> Unmanaged device found: usb0; state CONNECTED forced.
> Jan 18 17:37:42 D130102 NetworkManager[756]: <debug>
> [1516297062.6658]
> Unmanaged device found: usb0; state CONNECTED forced.
> Jan 18 17:37:44 D130102 NetworkManager[756]: <debug>
> [1516297064.5643]
> Unmanaged device found: usb0; state CONNECTED forced.
> Jan 18 17:37:44 D130102 NetworkManager[756]: <debug>
> [1516297064.6827]
> Unmanaged device found: usb0; state CONNECTED forced.
> Jan 18 17:37:44 D130102 NetworkManager[756]: <debug>
> [1516297064.7202]
> device[0x6bc788] (usb0): ip4-config: update (commit=0,
> routes-full-sync=0, new-config=0x6c7838)
> Jan 18 17:37:44 D130102 NetworkManager[756]: <debug>
> [1516297064.7675]
> device[0x6bc788] (usb0): ip4-config: set IP4Config instance
> (/org/freedesktop/NetworkManager/IP4Config/4)
> Jan 18 17:37:44 D130102 NetworkManager[756]: <debug>
> [1516297064.7679]
> default-route: entry[0/dev:0x6bc788:usb0:1:-sync]: record:add
> 0.0.0.0/0 via 0.0.0.0 dev 4 metric 1004 mss 0 src rt-boot scope link
> (1004)
> Jan 18 17:37:44 D130102 NetworkManager[756]: <debug>
> [1516297064.7722]
> device[0x6bc788] (usb0): ip6-config: update (commit=0,
> routes-full-sync=0, new-config=0x6f78b8)
> Jan 18 17:37:44 D130102 NetworkManager[756]: <debug>
> [1516297064.8207]
> device[0x6bc788] (usb0): ip6-config: set IP6Config instance
> (/org/freedesktop/NetworkManager/IP6Config/4)
> Jan 18 17:37:44 D130102 NetworkManager[756]: <debug>
> [1516297064.8442]
> properties-changed[0x6bc788]: type NMDeviceEthernet, iface
> NMDBusDeviceEthernetSkeleton: {'Autoconnect': <true>, 'Carrier':
> <true>,
> 'Driver': <'at91_udc'>, 'DriverVersion': <'29-May-2008'>,
> 'FirmwareVersion': <'at91_udc'>, 'HwAddress': <'8E:8E:76:28:44:AB'>,
> 'Interface': <'usb0'>, 'Ip4Address': <uint32 1510473385>,
> 'Ip4Config':
> <objectpath '/org/freedesktop/NetworkManager/IP4Config/4'>,
> 'Ip6Config':
> <objectpath '/org/freedesktop/NetworkManager/IP6Config/4'>, 'Mtu':
> <uint32 1500>, 'PermHwAddress': <''>, 'PhysicalPortId': <''>, 'Real':
> <true>, 'Udi': <'/virtual/device/placeholder/3'>}
> Jan 18 17:37:45 D130102 NetworkManager[756]: <debug>
> [1516297065.5295]
> device[0x6bc788] (usb0): emit RECHECK_ASSUME signal
>
> But even if NM notices this change, it is not shown in the nmcli:
>
> DEVICE TYPE STATE CONNECTION
> eth0 ethernet connected Ethernet
> usb0 ethernet unmanaged -- Hi, As you see, usb0 is still configured as unmanaged. This time however, it is marked as unmanaged for yet another reason. See below. Configure the device as managed instead, as said before. > > sit0 iptunnel unmanaged -- > lo loopback unmanaged -- > > > Why is the manual connection (without /etc/network/interfaces) not > working? If you enable ifupdown settings plugin and configure the interface in /etc/network/interfaces, then it's also marked as unmanaged. Don't do that, See "managed" in the IFUPDOWN SECTION of `man NetworkManager.conf`. Just drop the section from interfaces file, or at least configure NM with ifupdown.managed. best, Thomas
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