snappy-hwe-snaps

wifi-ap.management-service[1604]: RTNETLINK answers: Name not unique on network

Bug #1860274 reported by bob adam on 2020-01-19

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	snappy-hwe-snaps	New	Undecided	Unassigned

Bug Description

$ sudo wifi-ap.config get
debug: true
dhcp.lease-time: 12h
dhcp.range-start: 10.0.60.2
dhcp.range-stop: 10.0.60.199
disabled: true
share.disabled: false
share.network-interface: wlp4s0
wifi.address: 10.0.60.1
wifi.channel: 11
wifi.country-code:
wifi.hostapd-driver: nl80211
wifi.interface: wlp4s0
wifi.interface-mode: virtual
wifi.netmask: 255.255.255.0
wifi.operation-mode: g
wifi.security: wpa2
wifi.security-passphrase: *********
wifi.ssid: *********

$ sudo wifi-ap.status
ap.active: false

$ journalctl --no-pager -u snap.wifi-ap.management-service
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: 2020/01/19 20:13:40 http: multiple response.WriteHeader calls
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + . /snap/wifi-ap/355/bin/helper.sh
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + '[' false = true ']'
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + DEFAULT_ACCESS_POINT_INTERFACE=ap0
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + ip link show wlp4s0
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: 3: wlp4s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DORMANT
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: link/ether 28:e3:47:a7:c8:84 brd ff:ff:ff:ff:ff:ff
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + trap do_cleanup TERM
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + do_cleanup
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + '[' -f /var/snap/wifi-ap/355/hostapd.pid ']'
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + '[' -f /var/snap/wifi-ap/355/dnsmasq.pid ']'
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + iface=wlp4s0
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + '[' virtual = virtual ']'
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + iface=ap0
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + '[' false = false ']'
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + iptables --table nat --delete POSTROUTING --out-interface wlp4s0 -j MASQUERADE
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: iptables: No chain/target/match by that name.
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + true
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + iptables --delete FORWARD --in-interface ap0 -j ACCEPT
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: iptables: Bad rule (does a matching rule exist in that chain?).
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + true
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + sysctl -w net.ipv4.ip_forward=0
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: net.ipv4.ip_forward = 0
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + ip address flush ap0
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: Device "ap0" does not exist.
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + '[' virtual = virtual ']'
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + /snap/wifi-ap/355/bin/iw dev ap0 del
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: command failed: No such device (-19)
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + iface=wlp4s0
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + '[' virtual = virtual ']'
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + iface=ap0
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: ++ /snap/wifi-ap/355/bin/iw dev wlp4s0 info
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: ++ awk '/channel/{print$2}'
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + channel_in_use=11
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + '[' -z 11 ']'
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + '[' 11 '!=' 11 ']'
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + '[' virtual = virtual ']'
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + iface=ap0
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + /snap/wifi-ap/355/bin/iw dev wlp4s0 interface add ap0 type __ap
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + wait_until_interface_is_available ap0
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + does_interface_exist ap0
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + '[' -d /sys/class/net/ap0 ']'
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + '[' virtual = direct ']'
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + is_nm_running
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: ++ /snap/wifi-ap/355/bin/nmcli -t -f RUNNING general
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + nm_status=running
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + '[' running = running ']'
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + /snap/wifi-ap/355/bin/nmcli d set ap0 managed no
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + ip link set dev ap0 up
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: RTNETLINK answers: Name not unique on network
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + echo 'ERROR: Failed to enable WiFi network interface '\''ap0'\'''
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: ERROR: Failed to enable WiFi network interface 'ap0'
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + '[' virtual = virtual ']'
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + /snap/wifi-ap/355/bin/iw dev ap0 del
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + is_nm_running
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: ++ /snap/wifi-ap/355/bin/nmcli -t -f RUNNING general
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + nm_status=running
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + '[' running = running ']'
1月 19 20:13:40 yly-Aspire wifi-ap.management-service[1604]: + /snap/wifi-ap/355/bin/nmcli d set ap0 managed yes
1月 19 20:13:41 yly-Aspire wifi-ap.management-service[1604]: Error: Device 'ap0' not found.
1月 19 20:13:41 yly-Aspire wifi-ap.management-service[1604]: + exit 1

Revision history for this message

Alfonso Sanchez-Beato (alfonsosanchezbeato) wrote on 2020-01-20:

Maybe there was left-over from a previous run of wifi-ap? Which is the output of 'iw list' and 'ip link show? Also, what happens if you reboot the device?

Revision history for this message

bob adam (bobadam) wrote on 2020-01-20:

Download full text (9.6 KiB)

Same results after restarting the laptop.
$ iw list
Wiphy phy0
	max # scan SSIDs: 4
	max scan IEs length: 2257 bytes
	Retry short limit: 7
	Retry long limit: 4
	Coverage class: 0 (up to 0m)
	Device supports RSN-IBSS.
	Device supports AP-side u-APSD.
	Device supports T-DLS.
	Supported Ciphers:
		* WEP40 (00-0f-ac:1)
		* WEP104 (00-0f-ac:5)
		* TKIP (00-0f-ac:2)
		* CCMP (00-0f-ac:4)
		* 00-0f-ac:10
		* GCMP (00-0f-ac:8)
		* 00-0f-ac:9
		* CMAC (00-0f-ac:6)
		* 00-0f-ac:13
		* 00-0f-ac:11
		* 00-0f-ac:12
	Available Antennas: TX 0x3 RX 0x3
	Configured Antennas: TX 0x3 RX 0x3
	Supported interface modes:
		 * IBSS
		 * managed
		 * AP
		 * AP/VLAN
		 * monitor
		 * mesh point
		 * P2P-client
		 * P2P-GO
		 * Unknown mode (11)
	Band 1:
		Capabilities: 0x11ef
			RX LDPC
			HT20/HT40
			SM Power Save disabled
			RX HT20 SGI
			RX HT40 SGI
			TX STBC
			RX STBC 1-stream
			Max AMSDU length: 3839 bytes
			DSSS/CCK HT40
		Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
		Minimum RX AMPDU time spacing: 8 usec (0x06)
		HT TX/RX MCS rate indexes supported: 0-15
		Bitrates (non-HT):
			* 1.0 Mbps
			* 2.0 Mbps (short preamble supported)
			* 5.5 Mbps (short preamble supported)
			* 11.0 Mbps (short preamble supported)
			* 6.0 Mbps
			* 9.0 Mbps
			* 12.0 Mbps
			* 18.0 Mbps
			* 24.0 Mbps
			* 36.0 Mbps
			* 48.0 Mbps
			* 54.0 Mbps
		Frequencies:
			* 2412 MHz [1] (20.0 dBm)
			* 2417 MHz [2] (20.0 dBm)
			* 2422 MHz [3] (20.0 dBm)
			* 2427 MHz [4] (20.0 dBm)
			* 2432 MHz [5] (20.0 dBm)
			* 2437 MHz [6] (20.0 dBm)
			* 2442 MHz [7] (20.0 dBm)
			* 2447 MHz [8] (20.0 dBm)
			* 2452 MHz [9] (20.0 dBm)
			* 2457 MHz [10] (20.0 dBm)
			* 2462 MHz [11] (20.0 dBm)
			* 2467 MHz [12] (20.0 dBm) (no IR)
			* 2472 MHz [13] (20.0 dBm) (no IR)
			* 2484 MHz [14] (disabled)
	Band 2:
		Capabilities: 0x11ef
			RX LDPC
			HT20/HT40
			SM Power Save disabled
			RX HT20 SGI
			RX HT40 SGI
			TX STBC
			RX STBC 1-stream
			Max AMSDU length: 3839 bytes
			DSSS/CCK HT40
		Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
		Minimum RX AMPDU time spacing: 8 usec (0x06)
		HT TX/RX MCS rate indexes supported: 0-15
		Bitrates (non-HT):
			* 6.0 Mbps
			* 9.0 Mbps
			* 12.0 Mbps
			* 18.0 Mbps
			* 24.0 Mbps
			* 36.0 Mbps
			* 48.0 Mbps
			* 54.0 Mbps
		Frequencies:
			* 5180 MHz [36] (23.0 dBm) (no IR)
			* 5200 MHz [40] (23.0 dBm) (no IR)
			* 5220 MHz [44] (23.0 dBm) (no IR)
			* 5240 MHz [48] (23.0 dBm) (no IR)
			* 5260 MHz [52] (23.0 dBm) (no IR, radar detection)
			  DFS state: usable (for 9799 sec)
			  DFS CAC time: 60000 ms
			* 5280 MHz [56] (23.0 dBm) (no IR, radar detection)
			  DFS state: usable (for 9799 sec)
			  DFS CAC time: 60000 ms
			* 5300 MHz [60] (23.0 dBm) (no IR, radar detection)
			  DFS state: usable (for 9799 sec)
			  DFS CAC time: 60000 ms
			* 5320 MHz [64] (23.0 dBm) (no IR, radar detection)
			  DFS state: usable (for 9799 sec)
			  DFS CAC time: 60000 ms
			* 5500 MHz [100] (disabled)
			* 5520 MHz [104] (disabled)
			* 5540 MHz [108] (disabled)
			* 5560 MHz [112] (disabled)
			* 5580 MHz [116] (disabled)
			* 5600 MHz [120] (disabled)
			* 5620 MHz [124] (disabled)
			* 5640 MHz [128] (disabled)
			* 5660 MHz [132] (disabled)
			* 5680 MHz [136] (disabled)
			* 5700 MHz [140] (disabled)
			* 5745 MHz [149] (30.0 dBm) (no IR)
			* 5765 MHz [153] (30.0 dBm) (no IR)
			* 5785 MHz [157] (30.0 dBm) (no IR)
			* 5805 MHz [161] (30.0 dBm) (no IR)
			* 5825 MHz [165] (30.0 dBm) (no IR)
	Supported commands:
		 * new_interface
		 * set_interface
		 * new_key
		 * start_ap
		 * new_station
		 * new_mpath
		 * set_mesh_config
		 * set_bss
		 * authenticate
		 * associate
		 * deauthenticate
		 * disassociate
		 * join_ibss
		 * join_mesh
		 * remain_on_channel
		 * set_tx_bitrate_mask
		 * frame
		 * frame_wait_cancel
		 * set_wiphy_netns
		 * set_channel
		 * set_wds_peer
		 * tdls_mgmt
		 * tdls_oper
		 * probe_client
		 * set_noack_map
		 * register_beacons
		 * start_p2p_device
		 * set_mcast_rate
		 * connect
		 * disconnect
		 * channel_switch
		 * Unknown command (104)
		 * Unknown command (121)
	Supported TX frame types:
		 * IBSS: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
		 * managed: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
		 * AP: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
		 * AP/VLAN: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
		 * mesh point: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
		 * P2P-client: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
		 * P2P-GO: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
		 * P2P-device: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
	Supported RX frame types:
		 * IBSS: 0x40 0xb0 0xc0 0xd0
		 * managed: 0x40 0xd0
		 * AP: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
		 * AP/VLAN: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
		 * mesh point: 0xb0 0xc0 0xd0
		 * P2P-client: 0x40 0xd0
		 * P2P-GO: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
		 * P2P-device: 0x40 0xd0
	software interface modes (can always be added):
		 * AP/VLAN
		 * monitor
	valid interface combinations:
		 * #{ managed } <= 2048, #{ AP, mesh point } <= 8, #{ P2P-client, P2P-GO } <= 1,
		   total <= 2048, #channels <= 1, STA/AP BI must match
	HT Capability overrides:
		 * MCS: ff ff ff ff ff ff ff ff ff ff
		 * maximum A-MSDU length
		 * supported channel width
		 * short GI for 40 MHz
		 * max A-MPDU length exponent
		 * min MPDU start spacing
	Device supports TX status socket option.
	Device supports HT-IBSS.
	Device supports SAE with AUTHENTICATE command
	Device supports low priority scan.
	Device supports scan flush.
	Device supports AP scan.
	Device supports per-vif TX power setting
	P2P GO supports CT window setting
	Driver supports full state transitions for AP/GO clients
	Driver supports a userspace MPM
	Device supports active monitor (which will ACK incoming frames)
	Driver/device bandwidth changes during BSS lifetime (AP/GO mode)

$ ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: enp3s0f0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN mode DEFAULT group default qlen 1000
    link/ether c4:54:44:39:ea:4c brd ff:ff:ff:ff:ff:ff
3: wlp4s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DORMANT group default qlen 1000
    link/ether 28:e3:47:a7:c8:84 brd ff:ff:ff:ff:ff:ff
4: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT group default 
    link/ether 02:42:be:e3:dc:e6 brd ff:ff:ff:ff:ff:ff

After that, I try to run some commands which shown in the log step by step.
$ sudo /snap/wifi-ap/355/bin/iw dev wlp4s0 interface add ap0 type __ap
$ ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: enp3s0f0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN mode DEFAULT group default qlen 1000
    link/ether c4:54:44:39:ea:4c brd ff:ff:ff:ff:ff:ff
3: wlp4s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DORMANT group default qlen 1000
    link/ether 28:e3:47:a7:c8:84 brd ff:ff:ff:ff:ff:ff
4: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT group default 
    link/ether 02:42:be:e3:dc:e6 brd ff:ff:ff:ff:ff:ff
6: ap0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
    link/ether 28:e3:47:a7:c8:84 brd ff:ff:ff:ff:ff:ff
$ sudo ifconfig ap0 hw ether 28:e3:47:a7:c8:85
$ ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: enp3s0f0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN mode DEFAULT group default qlen 1000
    link/ether c4:54:44:39:ea:4c brd ff:ff:ff:ff:ff:ff
3: wlp4s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DORMANT group default qlen 1000
    link/ether 28:e3:47:a7:c8:84 brd ff:ff:ff:ff:ff:ff
4: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT group default 
    link/ether 02:42:be:e3:dc:e6 brd ff:ff:ff:ff:ff:ff
6: ap0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
    link/ether 28:e3:47:a7:c8:85 brd ff:ff:ff:ff:ff:ff
$ sudo /snap/wifi-ap/355/bin/nmcli -t -f RUNNING general
running
$ sudo /snap/wifi-ap/355/bin/nmcli d set ap0 managed no
$ sudo ip link set dev ap0 up
$ ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: enp3s0f0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN mode DEFAULT group default qlen 1000
    link/ether c4:54:44:39:ea:4c brd ff:ff:ff:ff:ff:ff
3: wlp4s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP mode DORMANT group default qlen 1000
    link/ether 28:e3:47:a7:c8:84 brd ff:ff:ff:ff:ff:ff
4: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT group default 
    link/ether 02:42:be:e3:dc:e6 brd ff:ff:ff:ff:ff:ff
6: ap0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN mode DEFAULT group default qlen 1000
    link/ether 28:e3:47:a7:c8:85 brd ff:ff:ff:ff:ff:ff
Notice that I just changed the mac address of the new device ap0, the original error disappeared, and the device ap0 was started. Is this the cause of the entire error?

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