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应用系统更新时如何解决“无法解析主机：mirrors.fedoraproject.org”？

tag-icon • tag-icon fedora package-management upgrade mirror
应用系统更新时如何解决“无法解析主机：mirrors.fedoraproject.org”？

这是我尝试下载并安装系统更新时收到此错误消息的第二天。有 25 个更新等待安装，其中包括操作系统更新。

包管理器的详细错误如下：

无法将 Packages/j/java-1.8.0-openjdk-headless-1.8.0.60-14.b27.fc23.i686.rpm 下载到 /var/cache/PackageKit/metadata/fedora/packages/: Curl 错误 (6):无法解析主机名 https://mirrors.fedoraproject.org/metalink?repo=fedora-23&arch=x86_64 [无法解析主机：mirrors.fedoraproject.org]

我已经能够安装各种软件包，但不能安装系统更新。还有什么我可以在本地尝试的吗？

当我去https://mirrors.fedoraproject.org/metalink?repo=fedora-23&arch=x86_64或在浏览器中使用mirrors.fedoraproject.org，解析 URL。只有在进行系统更新时才会失败。

我的文件内容/etc/resolv.conf：

# Generated by NetworkManager

search hsd1.ma.comcast.net

nameserver 75.75.75.75

nameserver 75.75.76.76

nameserver 2001:558:feed::1

# NOTE: the libc resolver may not support more than 3 nameservers.

# The nameservers listed below may not be recognized.

nameserver 2001:558:feed::2

的输出sudo ifconfig -a：

enp0s25：标志=4099 mtu 1500

    ether 00:24:7e:e1:89:5b  txqueuelen 1000  (Ethernet)

    RX packets 0  bytes 0 (0.0 B)

    RX errors 0  dropped 0  overruns 0  frame 0

    TX packets 0  bytes 0 (0.0 B)

    TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

    device interrupt 20  memory 0xfc600000-fc620000

瞧：标志=73 mtu 65536

    inet 127.0.0.1  netmask 255.0.0.0

    inet6 ::1  prefixlen 128  scopeid 0x10<host>

    loop  txqueuelen 0  (Local Loopback)

    RX packets 24  bytes 2064 (2.0 KiB)

    RX errors 0  dropped 0  overruns 0  frame 0

    TX packets 24  bytes 2064 (2.0 KiB)

    TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

virbr0：标志=4099 mtu 1500

    inet 192.168.124.1  netmask 255.255.255.0  broadcast 192.168.124.255

    ether 52:54:00:1d:e6:d9  txqueuelen 0  (Ethernet)

    RX packets 0  bytes 0 (0.0 B)

    RX errors 0  dropped 0  overruns 0  frame 0

    TX packets 0  bytes 0 (0.0 B)

    TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

virbr0-nic：标志=4098 mtu 1500

    ether 52:54:00:1d:e6:d9  txqueuelen 500  (Ethernet)

    RX packets 0  bytes 0 (0.0 B)

    RX errors 0  dropped 0  overruns 0  frame 0

    TX packets 0  bytes 0 (0.0 B)

    TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

wlp3s0：标志=4163 mtu 1500

    inet 10.0.0.142  netmask 255.255.255.0  broadcast 10.0.0.255

    inet6 2601:184:4500:bff5:221:6aff:fe8b:fbbc  prefixlen 64  scopeid 0x0<global>

    inet6 fe80::221:6aff:fe8b:fbbc  prefixlen 64  scopeid 0x20<link>

    inet6 2601:184:4500:bff5::154d  prefixlen 128  scopeid 0x0<global>

    ether 00:21:6a:8b:fb:bc  txqueuelen 1000  (Ethernet)

    RX packets 17231  bytes 9568612 (9.1 MiB)

    RX errors 0  dropped 0  overruns 0  frame 0

    TX packets 13742  bytes 2820399 (2.6 MiB)

    TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

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