yum 無法連接 - Linux

錯誤訊息如下 請問有無修正方法?

yum install tigervnc-server
Loaded plugins: fastestmirror, langpacks
base | 3.6 kB 00:00
extras | 3.4 kB 00:00
google-chrome | 951 B 00:00
rpmforge | 1.9 kB 00:00
updates | 3.4 kB 00:00
google-chrome/primary
FAILED
http://dl.google.com/linux/chrome/rpm/stable/x86_64/repodata/primary.xml.gz:
[Errno 14] curl#7 - "Failed to connect to 2404:6800:4008:801::200e: Network
is unreachable"
Trying other mirror.




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