hostapd/git's 5G AP's have recently 'gone missing' -- 2G still ok. what specific debug info to look for to troubleshoot ?

PGNet Dev pgnet.dev at gmail.com
Wed Oct 4 10:02:15 PDT 2017


I'm running

    git log | head
        commit fa4b605a0d1dcbd32a5038d61b90b8efd1ec7645
        Author: Lior David <qca_liord at qca.qualcomm.com>
        Date:   Thu Sep 28 21:55:09 2017 +0300

    hostapd -v
        hostapd v2.7-devel-hostap_2_6-1203-gfa4b605+
        User space daemon for IEEE 802.11 AP management,
        IEEE 802.1X/WPA/WPA2/EAP/RADIUS Authenticator
        Copyright (c) 2002-2017, Jouni Malinen <j at w1.fi> and contributors


on linux/64.

I've 4 virtual interfaces, on 2 physical devices

    iw dev
        phy#1
                Interface wifiGuest2
                        ifindex 8
                        wdev 0x100000002
                        addr e2:08:6b:22:ed:a1
                        ssid
wG2
                        type AP
                        channel 11 (2462 MHz), width: 40 MHz, center1: 2452 MHz
                        txpower 20.00 dBm
                Interface wlp2s0u1
                        ifindex 5
                        wdev 0x100000001
                        addr e2:08:6b:22:ed:a0
                        ssid wU2
                        type AP
                        channel 11 (2462 MHz), width: 40 MHz, center1: 2452 MHz
                        txpower 20.00 dBm
        phy#0
                Interface wifiGuest5
                        ifindex 9
                        wdev 0x2
                        addr 02:c0:ca:42:e7:31
                        ssid wG5
                        type AP
                        channel 157 (5785 MHz), width: 40 MHz, center1: 5795 MHz
                        txpower 30.00 dBm
                Interface wlp2s0u2
                        ifindex 4
                        wdev 0x1
                        addr 02:c0:ca:42:e7:30
                        ssid wU5
                        type AP
                        channel 157 (5785 MHz), width: 40 MHz, center1: 5795 MHz
                        txpower 30.00 dBm

My interfaces are 'up'

    wifiGuest2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
            inet 10.30.13.102  netmask 255.255.255.0  broadcast 10.30.13.255
            inet6 fe80::e008:6bff:fe18:fcc1  prefixlen 64  scopeid 0x20<link>
            ether e2:08:6b:22:ed:a1  txqueuelen 1000  (Ethernet)
            RX packets 0  bytes 0 (0.0 B)
            RX errors 0  dropped 0  overruns 0  frame 0
            TX packets 7  bytes 872 (872.0 B)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

    wifiGuest5: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
            inet 10.1.1.102  netmask 255.255.255.0  broadcast 10.1.1.255
            inet6 fe80::c0:caff:fe88:1721  prefixlen 64  scopeid 0x20<link>
            ether 02:c0:ca:42:e7:31  txqueuelen 1000  (Ethernet)
            RX packets 0  bytes 0 (0.0 B)
            RX errors 0  dropped 0  overruns 0  frame 0
            TX packets 7  bytes 872 (872.0 B)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

    wlp1s0u3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
            inet 172.16.1.102  netmask 255.255.255.0  broadcast 172.16.1.255
            inet6 fe80::c0:caff:fe88:1720  prefixlen 64  scopeid 0x20<link>
            ether 02:c0:ca:42:e7:30  txqueuelen 1000  (Ethernet)
            RX packets 0  bytes 0 (0.0 B)
            RX errors 0  dropped 0  overruns 0  frame 0
            TX packets 7  bytes 872 (872.0 B)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

    wlp1s0u4: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
            inet 172.30.13.102  netmask 255.255.255.0  broadcast 172.30.13.255
            inet6 fe80::e008:6bff:fe18:fcc0  prefixlen 64  scopeid 0x20<link>
            ether e2:08:6b:22:ed:a0  txqueuelen 1000  (Ethernet)
            RX packets 0  bytes 0 (0.0 B)
            RX errors 0  dropped 0  overruns 0  frame 0
            TX packets 7  bytes 872 (872.0 B)
            TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0


    iwconfig

        ...
        wlp2s0u1  IEEE 802.11  Mode:Master  Tx-Power=20 dBm  
                  Retry short limit:7   RTS thr:off   Fragment thr:off
                  Power Management:off

        wifiGuest5  IEEE 802.11  Mode:Master  Tx-Power=30 dBm  
                  Retry short  long limit:2   RTS thr:off   Fragment thr:off
                  Power Management:off

        wifiGuest2  IEEE 802.11  Mode:Master  Tx-Power=20 dBm
                  Retry short limit:7   RTS thr:off   Fragment thr:off
                  Power Management:off

        wlp2s0u2  IEEE 802.11  Mode:Master  Tx-Power=30 dBm
                  Retry short  long limit:2   RTS thr:off   Fragment thr:off
                  Power Management:off
        ...


with no immediately obvious (to me) errors on boot

    dmesg | egrep "wlp2s0u2|wlp2s0u1|wifiGuest5|wifiGuest2"
        [   14.000324] rt2800usb 3-3:1.0 wlp2s0u2: renamed from wlan0
        [   14.545433] ath9k_htc 3-4:1.0 wlp2s0u1: renamed from wlan0
        [   25.721010] IPv6: ADDRCONF(NETDEV_UP): wlp2s0u2: link is not ready
        [   25.918240] IPv6: ADDRCONF(NETDEV_UP): wlp2s0u1: link is not ready
        [   41.476855] IPv6: ADDRCONF(NETDEV_UP): wlp2s0u1: link is not ready
        [   41.769187] IPv6: ADDRCONF(NETDEV_UP): wlp2s0u2: link is not ready
        [   42.034720] IPv6: ADDRCONF(NETDEV_CHANGE): wlp2s0u1: link becomes ready
        [   42.376473] IPv6: ADDRCONF(NETDEV_CHANGE): wlp2s0u2: link becomes ready
        [   42.387544] IPv6: ADDRCONF(NETDEV_UP): wifiGuest2: link is not ready
        [   42.392439] IPv6: ADDRCONF(NETDEV_UP): wifiGuest5: link is not ready
        [   42.435653] IPv6: ADDRCONF(NETDEV_CHANGE): wifiGuest2: link becomes ready
        [   42.439141] IPv6: ADDRCONF(NETDEV_CHANGE): wifiGuest5: link becomes ready

Both daemons, @ 2.4G & 5G, are up & runnning, "healthy" according to systemd

    systemctl status -l hostapd2 hostapd5
        ● hostapd2.service - Hostapd 2GHz
           Loaded: loaded (/etc/systemd/system/hostapd2.service; enabled; vendor preset: disabled)
           Active: active (running) since Wed 2017-10-04 09:11:16 PDT; 13min ago
         Main PID: 1600 (hostapd)
            Tasks: 1 (limit: 512)
           CGroup: /system.slice/hostapd2.service
                   └─1600 /usr/local/bin/hostapd /usr/local/etc/hostapd/hostapd_2.4GHz.conf

    ● hostapd5.service - Hostapd 5GHz
           Loaded: loaded (/etc/systemd/system/hostapd5.service; enabled; vendor preset: disabled)
           Active: active (running) since Wed 2017-10-04 09:11:16 PDT; 13min ago
         Main PID: 1596 (hostapd)
            Tasks: 1 (limit: 512)
           CGroup: /system.slice/hostapd5.service

                   └─1596 /usr/local/bin/hostapd /usr/local/etc/hostapd/hostapd_5GHz.conf

scanning/connecting locally from my 2.4G/5G-capable phone, I can see/connect:

    (1) *my* 2.4G nets, 'wU2' & 'wG2'
    (2) *all* other 5G nets

but NOT

    (3) *my* 5G nets, 'wU5' & 'wG5'

I know this *used* to work with older versions of hostapd on my box quite a few system/app-upgrades ago.

I'm trying to track down what the problem is *now* -- why I can't even detect my 5G nets anymore.  If there's a problem, I'm either not looking in the right place, or with not enough detail.

What/where should I be looking at for corrrect/greater detail to troubleshoot my 'missing 5G' issue?

-pgnd



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