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This is now the second day of getting this error message when I attempt to download and install system updates. There are 25 updates, including an OS update, waiting to be installed.

Detailed errors from the package manager follow:

cannot download Packages/j/java-1.8.0-openjdk-headless-1.8.0.60-14.b27.fc23.i686.rpm to /var/cache/PackageKit/metadata/fedora/packages/: Curl error (6): Couldn't resolve host name for https://mirrors.fedoraproject.org/metalink?repo=fedora-23&arch=x86_64 [Could not resolve host: mirrors.fedoraproject.org]

I've been able to install various packages, but not the system updates. Is there anything else that I can try locally?

When I go to https://mirrors.fedoraproject.org/metalink?repo=fedora-23&arch=x86_64 or mirrors.fedoraproject.org in a browser, the URLs resolve. It is only when doing a system update that it fails.

The contents of my /etc/resolv.conf file:

# 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

The output of sudo ifconfig -a:

enp0s25: flags=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  

lo: flags=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: flags=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: flags=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: flags=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
  • I am resolving it. what is your /etc/resolv.conf? – Rui F Ribeiro Nov 25 '15 at 13:49
  • @RuiFRibeiro Let me edit that the contents of /etc/resolv.conf into my question. If I go there in a browser (to mirrors.fedoraproject.org/… or to mirrors.fedoraproject.org), it resolves. It only doesn't resolve in the software update tool. – Thomas Owens Nov 25 '15 at 13:51
  • would you post "sudo ifconfig -a" please? – Rui F Ribeiro Nov 25 '15 at 13:56
  • @RuiFRibeiro Added. – Thomas Owens Nov 25 '15 at 14:08
  • multi-network machine, IPv6... an interesting test could be deactivating IPv6 temporarily and testing the situation to rule that out. "sudo netstat -nr"? – Rui F Ribeiro Nov 25 '15 at 16:04

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