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升级后的 Debian Stable (Jessie) 桌面无法连接到有线互联网

tag-icon • tag-icon linux debian ethernet dhcp internet
升级后的 Debian Stable (Jessie) 桌面无法连接到有线互联网

几天前，我将 Debian Jessie 安装更新到了当前的次要版本 (8.3)，其中包括一个新的 Linux 内核（uname -a给出3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt20-1+deb8u3 (2016-01-17) x86_64 GNU/Linux）。从那时起，我就无法连接到互联网，而这在以前并不是问题。如果我将同一以太网电缆和端口插入 Macbook 甚至古老的 CentOS 计算机，则可以快速连接到互联网（使用 DHCP），因此问题一定出在 Debian 配置中。但我不知道该怎么办。我尝试了 DHCP 或静态 IP 的不同组合（使用其他计算机上通过 DHCP 获得的 IP 地址和设置）和/ifupdown或network-manager，以及多次重新启动，但均无济于事。 DHCP 要么默默地失败，要么显示有关未获得租约的消息。使用静态 IP，以太网设备显示为已连接，但实际上没有连接到互联网。关于如何排除故障有什么想法吗？

/var/log/dmesg编辑：以下是[eth1是正确的端口]中似乎可能相关的行：

[ 16.480813] ADDRCONF(NETDEV_UP): eth1: link is not ready
[ 18.031149] tg3 0000:08:00.0: eth1: Link is up at 100 Mbps, full duplex
[ 18.031151] tg3 0000:08:00.0: eth1: Flow control is off for TX and off for RX
[ 18.031881] ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
[ 28.240006] eth1: no IPv6 routers present

输出nmcli -p -f general device show eth1：

===============================================================================
                             Device details (eth1)
===============================================================================
GENERAL.DEVICE:                         eth1
GENERAL.TYPE:                           ethernet
GENERAL.VENDOR:                         Broadcom Corporation
GENERAL.PRODUCT:                        NetXtreme BCM5754 Gigabit Ethernet PCI Express (Precision T5400)
GENERAL.DRIVER:                         tg3
GENERAL.DRIVER-VERSION:                 3.137
GENERAL.FIRMWARE-VERSION:               5754-v3.24
GENERAL.HWADDR:                         00:21:9B:41:28:86
GENERAL.MTU:                            1500
GENERAL.STATE:                          100 (connected)
GENERAL.REASON:                         0 (No reason given)
GENERAL.UDI:                            /sys/devices/pci0000:00/0000:00:1c.0/0000:08:00.0/net/eth1
GENERAL.IP-IFACE:                       eth1
GENERAL.NM-MANAGED:                     yes
GENERAL.AUTOCONNECT:                    yes
GENERAL.FIRMWARE-MISSING:               no
GENERAL.CONNECTION:                     eth1
GENERAL.CON-UUID:                       c81bfd1d-5dad-4ba0-9160-b6dba7ea325a
GENERAL.CON-PATH:                       /org/freedesktop/NetworkManager/ActiveConnection/2

输出ethtool eth1：

Settings for eth1:
    Supported ports: [ TP ]
    Supported link modes:   10baseT/Half 10baseT/Full 
                            100baseT/Half 100baseT/Full 
                            1000baseT/Half 1000baseT/Full 
    Supported pause frame use: No
    Supports auto-negotiation: Yes
    Advertised link modes:  10baseT/Half 10baseT/Full 
                            100baseT/Half 100baseT/Full 
                            1000baseT/Half 1000baseT/Full 
    Advertised pause frame use: Symmetric
    Advertised auto-negotiation: Yes
    Link partner advertised link modes:  10baseT/Half 10baseT/Full 
                                         100baseT/Half 100baseT/Full 
    Link partner advertised pause frame use: No
    Link partner advertised auto-negotiation: Yes
    Speed: 100Mb/s
    Duplex: Full
    Port: Twisted Pair
    PHYAD: 1
    Transceiver: internal
    Auto-negotiation: on
    MDI-X: off
    Supports Wake-on: g
    Wake-on: g
    Current message level: 0x000000ff (255)
                   drv probe link timer ifdown ifup rx_err tx_err
    Link detected: yes

输出lsmod | grep tg3：

tg3                   164481  0 
ptp                    17692  1 tg3
libphy                 32268  1 tg3

输出lspci | grep -i ethernet：

08:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5754 Gigabit Ethernet PCI Express (rev 02)

输出cat /var/log/kern.log | grep -i tg：

May 15 12:00:14 kernel: [    2.587463] tg3.c:v3.116 (December 3, 2010)
May 15 12:00:14 kernel: [    2.587482] tg3 0000:08:00.0: PCI INT A -> GSI
 16 (level, low) -> IRQ 16
May 15 12:00:14 kernel: [    2.587491] tg3 0000:08:00.0: setting latency 
timer to 64
May 15 12:00:14 kernel: [    2.604699] tg3 0000:08:00.0: eth0: Tigon3 [pa
rtno(BCM95754) rev b002] (PCI Express) MAC address 00:21:9b:41:28:86
May 15 12:00:14 kernel: [    2.604702] tg3 0000:08:00.0: eth0: attached P
HY is 5787 (10/100/1000Base-T Ethernet) (WireSpeed[1])
May 15 12:00:14 kernel: [    2.604704] tg3 0000:08:00.0: eth0: RXcsums[1]
 LinkChgREG[0] MIirq[0] ASF[0] TSOcap[1]
May 15 12:00:14 kernel: [    2.604706] tg3 0000:08:00.0: eth0: dma_rwctrl
[76180000] dma_mask[64-bit]
May 15 12:00:14 kernel: [   13.668551] tg3 0000:08:00.0: irq 78 for MSI/M
SI-X
May 15 12:00:14 kernel: [   15.265188] tg3 0000:08:00.0: eth1: Link is up
 at 100 Mbps, full duplex
May 15 12:00:14 kernel: [   15.265190] tg3 0000:08:00.0: eth1: Flow contr
ol is off for TX and off for RX

输出ethtool -S eth1：

NIC statistics:
 rx_octets: 1351463
 rx_fragments: 0
 rx_ucast_packets: 0
 rx_mcast_packets: 1051
 rx_bcast_packets: 8167
 rx_fcs_errors: 0
 rx_align_errors: 0
 rx_xon_pause_rcvd: 0
 rx_xoff_pause_rcvd: 0
 rx_mac_ctrl_rcvd: 0
 rx_xoff_entered: 0
 rx_frame_too_long_errors: 0
 rx_jabbers: 0
 rx_undersize_packets: 0
 rx_in_length_errors: 0
 rx_out_length_errors: 0
 rx_64_or_less_octet_packets: 0
 rx_65_to_127_octet_packets: 0
 rx_128_to_255_octet_packets: 0
 rx_256_to_511_octet_packets: 0
 rx_512_to_1023_octet_packets: 0
 rx_1024_to_1522_octet_packets: 0
 rx_1523_to_2047_octet_packets: 0
 rx_2048_to_4095_octet_packets: 0
 rx_4096_to_8191_octet_packets: 0
 rx_8192_to_9022_octet_packets: 0
 tx_octets: 106305
 tx_collisions: 0
 tx_xon_sent: 0
 tx_xoff_sent: 0
 tx_flow_control: 0
 tx_mac_errors: 0
 tx_single_collisions: 0
 tx_mult_collisions: 0
 tx_deferred: 0
 tx_excessive_collisions: 0
 tx_late_collisions: 0
 tx_collide_2times: 0
 tx_collide_3times: 0
 tx_collide_4times: 0
 tx_collide_5times: 0
 tx_collide_6times: 0
 tx_collide_7times: 0
 tx_collide_8times: 0
 tx_collide_9times: 0
 tx_collide_10times: 0
 tx_collide_11times: 0
 tx_collide_12times: 0
 tx_collide_13times: 0
 tx_collide_14times: 0
 tx_collide_15times: 0
 tx_ucast_packets: 492
 tx_mcast_packets: 30
 tx_bcast_packets: 995
 tx_carrier_sense_errors: 0
 tx_discards: 0
 tx_errors: 0
 dma_writeq_full: 0
 dma_write_prioq_full: 0
 rxbds_empty: 0
 rx_discards: 0
 rx_errors: 0
 rx_threshold_hit: 0
 dma_readq_full: 0
 dma_read_prioq_full: 0
 tx_comp_queue_full: 0
 ring_set_send_prod_index: 0
 ring_status_update: 0
 nic_irqs: 0
 nic_avoided_irqs: 0
 nic_tx_threshold_hit: 0
 mbuf_lwm_thresh_hit: 0

输出iptables -vL：

Chain INPUT (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination         

Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination         

Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes)
 pkts bytes target     prot opt in     out     source               destination

答案1

1）尝试在启动时通过在 rc.local 中添加 echo 来重写 resolv.conf ，作为 root 类型：

echo "nameserver ip.addres.of.dns" > /etc/resolv.conf

ip.addres.of.dns = ip_router

2）备份接口文件

sudo cp /etc/network/interfaces /etc/network/interfaces.copy

编辑/etc/network/interfaces

它将类似于（示例）：

/etc/network/interfaces# This file describes the network interfaces available o$
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
    address 91.121.0.0
    netmask 255.255.255.0
    network 91.121.0.0
    broadcast 91.121.0.255
    gateway 91.121.0.254
    dns-nameservers 8.8.8.8 8.8.4.4

更新：对于 IPV6 示例：

  iface eth0 inet6 static
    address 2001:db8::c0ca:1eaf
    netmask 64
    gateway 2001:db8::1ead:ed:beef

重新启动网络：

sudo service networking restart

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