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| Advanced Tables - Table Plus |
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Date | | |
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2011-03-09 | All linux servers run PostgreSQL on IPv6 only | Configure "listen_address = '::'" in postgresql.conf. This is not documented (yet). | 2011-03-08 | HP Printer IPv6 only  | Upgraded Laserjet 4250 with new print server, removed A record | 2011-02-28 | Host ldap.terena.org IPv6 only | Removed IPv4 address and A record | <ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="1f8f69e080043484-a103b42a-486e4a53-8cfa9d60-90710088b7b7fb886f7096c2"><ac:plain-text-body><![CDATA[ | 2011-02-07 | Nagios web interface only reachable on IPv6 | Configure Listen [2001:610:158:98d::42]:80 in /etc/apache/ports.conf | ]]></ac:plain-text-body></ac:structured-macro> | 2011-02-07 | Host svn.terena.org IPv6 only | Removed IPv4 address and A record | 2011-02-01 | All linux servers run Postfix on IPv6 only (except listed MXs) | Remove IPv4 addresses from $mynetworks, and set "inet_protocols = ipv6" | 2011-01-31 | All linux servers managed by SSH via IPv6 only | Configure "ListenAddress ::" or "AddressFamily inet6" in sshd_config | 2011-01-30 | All linux servers use only IPv6 resolvers | Only list IPv6 addresses in /etc/resolv.conf: | No Format |
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nameserver 2001:610:148:dead::4
nameserver 2001:610:158:98d::42
domain terena.org |
| 2010-10-26 | VPN supports IPv6 | A new VPN setup: Cisco AnyConnect. Clients get an IPv4 and an IPv6 address from the office pools, so they can access all services via IPv6 |
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Specific issues
Name resolution
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To avoid name resolution problems, it was sometimes necessary to copy to the legacy 127.0.1.1 entries to ::1 in the /etc/hosts file:
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127.0.0.1 localhost
127.0.1.1 ldap.terena.org ldap
# The following lines are desirable for IPv6 capable hosts
::1 localhost ip6-localhost ip6-loopback ldap.terena.org ldap
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127.0.0.1
On IPv6 only hosts, there is no IPv4 address configured on the network interface, so obviously all communications will go via IPv6.
There is still an IPv4 address (127.0.0.1) sitting on the loopback interface lo. It's doesn't hurt but it should not be there if the host were to be truly IPv6 only 
I could not find anywhere in /etc where this address get added.
Since I can prevent it from getting added, I removed it after it gets added, by hacking configuring /etc/network/interfaces:
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# The loopback network interface
auto lo
iface lo inet6 loopback
pre-up ip addr del 127.0.0.1/8 dev lo
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This seems to work fine, only now ntp dumps core, but that has been fixed as of 17 April 2011.
Skype
Skype does not support IPv6 at all. EPIC FAIL!!!! Please everybody VOTE FOR IPv6.
FYI the first request for IPv6 enabled Skype date back to 2004!!
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