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FS#2893 - Ethernet port not receiving data on Ubiquiti LiteAP ac (LAP-120) #7676

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openwrt-bot opened this issue Mar 10, 2020 · 2 comments
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rogerpueyo:

Hi,

The Ubiquiti LiteAP ac (LAP-120) does not receive incoming packets via eth0 with the latest snapshot (OpenWrt SNAPSHOT, r12498-2a18840cc7):

root@OpenWrt:/# ifconfig br-lan Link encap:Ethernet HWaddr B4:FB:E4:FA:FA:FA inet addr:192.168.1.1 Bcast:192.168.1.255 Mask:255.255.255.0 inet6 addr: fdaa:a708:e003::1/60 Scope:Global inet6 addr: fe80::b6fb:e4ff:fefa:fafa/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:34 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:4420 (4.3 KiB)

eth0 Link encap:Ethernet HWaddr B4:FB:E4:FA:FA:FA
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:49 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:6622 (6.4 KiB)
Interrupt:4

It works correctly with latest stable, 19.07.2.

Using tcpdump on the connected computer I see outgoing traffic from the device, but incoming traffic does not reach the device.

The device correctly detects link changes, but different link speeds make no difference:

[ 1536.519019] eth0: link down
[ 1536.522824] br-lan: port 1(eth0) entered disabled state
[ 1537.561807] eth0: link up (1000Mbps/Full duplex)
[ 1537.566554] br-lan: port 1(eth0) entered blocking state
[ 1537.571932] br-lan: port 1(eth0) entered forwarding state
[ 1541.719009] eth0: link down
[ 1541.722824] br-lan: port 1(eth0) entered disabled state
[ 1542.761703] eth0: link up (100Mbps/Half duplex)
[ 1542.766359] br-lan: port 1(eth0) entered blocking state
[ 1542.771738] br-lan: port 1(eth0) entered forwarding state
[ 1545.879008] eth0: link down
[ 1545.882820] br-lan: port 1(eth0) entered disabled state
[ 1546.921800] eth0: link up (10Mbps/Half duplex)
[ 1546.926365] br-lan: port 1(eth0) entered blocking state
[ 1546.931744] br-lan: port 1(eth0) entered forwarding state

Please find attached dmesg outputs for both snapshot (snap) and 19.07.2 (19072).

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rogerpueyo:

Last working commit

  • Linux OpenWrt 4.19.79 #0 Tue Oct 15 14:11:28 2019 mips GNU/Linux OpenWrt SNAPSHOT, r11349-641a93f0f2

First failing commit

  • Linux OpenWrt 4.19.80 #0 Wed Oct 30 10:16:25 2019 mips GNU/Linux OpenWrt SNAPSHOT, r11361-4b2ab533d4

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rogerpueyo:

#2824

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