Fedora 23の不安なイーサネット接続

数日間、Fedora 23ノートブックのイーサネット接続が不安定になりました。ネットワーク接続が1分ごとに数秒間中断されました。

マシンが最新のカーネル（4.4.6）とパッケージに更新されました。

更新：静的またはDHCPアドレス指定に関係なく、さまざまな環境（他のケーブルやスイッチ）で問題が解決します。 USB-Ethアダプタへの接続が約1時間動作した後、同じ問題が発生し始めました。以前のカーネル（4.4.3）から起動しても問題は解決しません。しかし、Fedora 21を使用してLive CDから起動すると、有線ネットワークが機能しているようです。

この問題を経験した人はいますか？以下はいくつかのトラブルシューティングの結果です（ethデバイスenp0s25用）。

[root@linuxbox ~]# ip address
(...)
2: enp0s25: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether ec:b1:d7:97:9d:f2 brd ff:ff:ff:ff:ff:ff
    inet 10.10.10.13/24 brd 10.10.10.255 scope global enp0s25
       valid_lft forever preferred_lft forever
    inet6 fe80::eeb1:d7ff:fe97:9df2/64 scope link 
       valid_lft forever preferred_lft forever
(...)


[root@linuxbox ~]# dmesg 
(...) 
[ 1403.944457] ax88179_178a 4-5:1.0 enp0s20u5: ax88179 - Link status is: 0
[ 1409.490222] e1000e: enp0s25 NIC Link is Up 100 Mbps Full Duplex, Flow Control: None
[ 1409.490232] e1000e 0000:00:19.0 enp0s25: 10/100 speed: disabling TSO


[root@linuxbox ~]# ping www.google.com
PING www.google.com (172.217.16.132) 56(84) bytes of data.
64 bytes from zrh04s06-in-f4.1e100.net (172.217.16.132): icmp_seq=1 ttl=54 time=4.79 ms
64 bytes from zrh04s06-in-f4.1e100.net (172.217.16.132): icmp_seq=2 ttl=54 time=4.48 ms
64 bytes from zrh04s06-in-f4.1e100.net (172.217.16.132): icmp_seq=3 ttl=54 time=4.57 ms
64 bytes from zrh04s06-in-f4.1e100.net (172.217.16.132): icmp_seq=50 ttl=54 time=4.62 ms
64 bytes from zrh04s06-in-f4.1e100.net (172.217.16.132): icmp_seq=51 ttl=54 time=4.50 ms
64 bytes from zrh04s06-in-f4.1e100.net (172.217.16.132): icmp_seq=52 ttl=54 time=4.81 ms
64 bytes from zrh04s06-in-f4.1e100.net (172.217.16.132): icmp_seq=53 ttl=54 time=6.16 ms
(...)
^C
--- www.google.com ping statistics ---
65 packets transmitted, 11 received, 83% packet loss, time 64018ms
rtt min/avg/max/mdev = 4.486/4.803/6.164/0.469 ms


[root@linuxbox ~]# ethtool enp0s25
Settings for enp0s25:
    Supported ports: [ TP ]
    Supported link modes:   10baseT/Half 10baseT/Full 
                            100baseT/Half 100baseT/Full 
                            1000baseT/Full 
    Supported pause frame use: No
    Supports auto-negotiation: Yes
    Advertised link modes:  10baseT/Half 10baseT/Full 
                            100baseT/Half 100baseT/Full 
                            1000baseT/Full 
    Advertised pause frame use: No
    Advertised auto-negotiation: Yes
    Speed: 100Mb/s
    Duplex: Full
    Port: Twisted Pair
    PHYAD: 1
    Transceiver: internal
    Auto-negotiation: on
    MDI-X: off (auto)
    Supports Wake-on: pumbg
    Wake-on: g
    Current message level: 0x00000007 (7)
                   drv probe link
    Link detected: yes


[root@linuxbox ~]# ethtool -S enp0s25
NIC statistics:
     rx_packets: 10222
     tx_packets: 1774
     rx_bytes: 1146761
     tx_bytes: 250438
     rx_broadcast: 9287
     tx_broadcast: 37
     rx_multicast: 84
     tx_multicast: 102
     rx_errors: 0
     tx_errors: 0
     tx_dropped: 0
     multicast: 84
     collisions: 0
     rx_length_errors: 0
     rx_over_errors: 0
     rx_crc_errors: 0
     rx_frame_errors: 0
     rx_no_buffer_count: 0
     rx_missed_errors: 0
     tx_aborted_errors: 0
     tx_carrier_errors: 0
     tx_fifo_errors: 0
     tx_heartbeat_errors: 0
     tx_window_errors: 0
     tx_abort_late_coll: 0
     tx_deferred_ok: 0
     tx_single_coll_ok: 0
     tx_multi_coll_ok: 0
     tx_timeout_count: 0
     tx_restart_queue: 0
     rx_long_length_errors: 0
     rx_short_length_errors: 0
     rx_align_errors: 0
     tx_tcp_seg_good: 0
     tx_tcp_seg_failed: 0
     rx_flow_control_xon: 0
     rx_flow_control_xoff: 0
     tx_flow_control_xon: 0
     tx_flow_control_xoff: 0
     rx_csum_offload_good: 9429
     rx_csum_offload_errors: 0
     rx_header_split: 0
     alloc_rx_buff_failed: 0
     tx_smbus: 0
     rx_smbus: 0
     dropped_smbus: 0
     rx_dma_failed: 0
     tx_dma_failed: 0
     rx_hwtstamp_cleared: 0
     uncorr_ecc_errors: 0
     corr_ecc_errors: 0
     tx_hwtstamp_timeouts: 0


[root@linuxbox ~]# uname -a
Linux linuxbox 4.4.6-300.fc23.x86_64 #1 SMP Wed Mar 16 22:10:37 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux


[root@linuxbox ~]# lspci
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor DRAM Controller (rev 06)
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06)
00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller (rev 06)
00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB xHCI (rev 04)
00:16.0 Communication controller: Intel Corporation 8 Series/C220 Series Chipset Family MEI Controller #1 (rev 04)
00:19.0 Ethernet controller: Intel Corporation Ethernet Connection I217-V (rev 04)
00:1a.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #1 (rev d4)
00:1c.6 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #7 (rev d4)
00:1c.7 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #8 (rev d4)
00:1d.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation HM87 Express LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller (rev 04)
02:00.0 Network controller: Broadcom Corporation BCM43228 802.11a/b/g/n
03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5227 PCI Express Card Reader (rev 01)

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