IPv6 support
Network diagnostics tools
Network diagnostics tools should be updated to query both IPv4 and IPv6 addresses and prefer IPv6 by default, providing switches (e.g. -4 and -6) for IPv4-only and IPv6-only operation.
iputils
The historically IPv4-only commands in iputils package, notably ping and tracepath should support IPv6 right away and should default to dual-stack name resolution and follow operating system's protocol version preference. The ping6 and tracepath6 commands should be obsolete.
System libraries
System libraries should be updated to provide full dual-stack experience.
glibc
The GNU C Library should be updated to support IPv6 link-local addresses in the name service switch.
Client/server software
Packages containing client and server software should be updated to work well in IPv4, IPv6 and dual-stack environments.
DNSSEC
- Implement stuff from DNSSEC design document
Internationalized domain names
Libraries and tools should be built by default with IDN support.