I have a FC10 system that is set up for IPv6 only (IPv4 only on
localhost). Its /etc/resolv.conf has the IPv6 address of a namecaching
DNS server with IPv4 connectivity so it can reach all those DNS servers
out in the cloud....
Anyway.
So I am trying to setup yum update to run to a IPv6 mirror, trying
mirror.cc.vt.edu first. So I 'ping6 -n mirror.cc.vt.edu' and get
'unknown host'. I try 'host mirror.cc.vt.edu' and get:
mirror.cc.vt.edu is an alias for chernabog.cc.vt.edu.
chernabog.cc.vt.edu has address 198.82.161.58
chernabog.cc.vt.edu has IPv6 address 2001:468:c80:2105:0:25e:42da:ffc7
chernabog.cc.vt.edu mail is handled by 0 chernabog.cc.vt.edu.
So I try 'traceroute6 -n mirror.cc.vt.edu' and get:
mirror.cc.vt.edu: Temporary failure in name resolution
Cannot handle "host" cmdline arg 'mirror.cc.vt.edu' on position 1 (argc 2)
I then try 'traceroute6 -n 2001:468:c80:2105:0:25e:42da:ffc7' and get
there in 11 hops.
So why the name resolution failure? Firefox won't connect either. I
have not tried yum.
Is it the namecaching server's 'fault'? I can ping6 this host from this
notebook (running Centos) that is duo-stack and uses an IPv4 only
nameserver (that is the master from my zone).
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