Current Status of IPv6 Support for Networking Applications

This page shows the current status of IPv6 support of the most important networking applications for Linux and *BSD. We started from the Peter Bieringer's work on his famous IPv6 Status Page and tried to extend the information provided in it.

Nowadays, the number of applications with native IPv6 support is indeed significant, as most important networking applications provide native IPv6 support and there are also many developers working on unofficial patches for pretty much anything else.

It looks like the main factor that limits the spread of IPv6 is currently shifting from a lack of applications to a general lack of interest among connectivity providers. At the moment of this writing only a few ISPs offer native IPv6 Internet access to their customers.

Things are changing fast. We do our best in keeping this page up-to-date, but we need your help for this task, so please send us a report if you find inaccuracies or obsolete information in this page, or if you simply wish us to add a new application here.

2. Organization of the IPv6 status page

This page contains information about the IPv6 support of many networking applications. For each application there is an entry containing the following fields:

Field name	Meaning
Application	This field contains the name of the application.
Package	This field contains the name of the software package that contains the application. The application and package names are the same for most applications, although for some of them the difference is significant.
Version	This field contains the release number of the application the information refers to.
Worked By	This field contains information about the developers who are working on the IPv6 support for this application.
URLs	This field contains the URLs at which you can download this application and (if present) the patch that adds IPv6 support to it.
Comment	This field contains comments about this application and its IPv6 support.
Status	This field briefly summarizes the status of the IPv6 support for this application.

The applications are grouped by category.

A list of services with links to the relative application is also provided to facilitate the information retrieval.

2.1. Meaning of the URLs field

Icon	Meaning	Comment
	Sources	By clicking this icon you'll jump to the URL from which you can download the sources (or the binaries) of this application.
	Patch	By clicking this icon you'll jump to the URL from which you can download the patch that adds IPv6 support to this application.

2.2. Meaning of the Status field

Icon	Meaning	Comment
	Not working	This application does not support IPv6.
	Buggy	The IPv6 support of this application is buggy.
	Too old	There is a possibly unmaintained patch that enables IPv6 support for an old version of this application.
	Working	There is a patch that enables IPv6 support for this application.
	Native support	This application natively supports IPv6.

3. Service List

Port	Service	Package (i.e.)	Server	Client
7/tcp	echo	inetd, xinetd	available	N/A
9/tcp	discard	inetd, xinetd	available	N/A
13/tcp	daytime	inetd, xinetd	available	N/A
19/tcp	chargen	inetd, xinetd	available	N/A
21/tcp	ftp	proftpd, wu-ftpd	available	available
22/tcp	ssh	ssh	available	available
23/tcp	telnet	telnet	available	available
25/tcp	smtp	sendmail, mutt	available	available
43/tcp	whois	whois	available	available
53/udp	domain	bind	available	available
69/udp	tftp	tftp, tftpd	available	available
79/tcp	finger	bsd-finger	available	available
80/tcp	http	apache, mozilla, konqueror	available	available
109/tcp	pop2	This service is deprecated, use POP3 instead	N/A	N/A
110/tcp	pop3	solidpop3	available	available
113/tcp	auth	identd	available	N/A
119/tcp	nntp	inn, tin	available	available
123/udp	ntp	ntpdate, (x)ntpd	available	available
143/tcp	imap4	courier-imap, mutt	available	available
194/tcp	irc	bitchx	available	available
220/tcp	imap3	This service is deprecated, use IMAP4 instead	N/A	N/A
389/tcp	ldap	openldap	available	available
443/tcp	https	apache, mozilla, konqueror	available	available
445/tcp	microsoft-ds	samba	available	available
512/tcp	exec	rexec, rexecd	available	available
513/tcp	login	rlogin, rlogind	available	available
514/tcp	cmd	rsh, rshd	available	available
631/tcp	ipp	cups	available	available
636/tcp	ldaps	openldap	available	available
873/tcp	rsync	rsync	available	available
993/tcp	imaps	courier-imap	available	available
995/tcp	pop3s	courier-imap	available	available
5222/tcp	jabber	kopete, jabberd	available	available
6667/tcp	ircd	ircd	available	available
111/tcp	rpcbind		available	available

4. Super Daemons and Wrappers

4.1. Inetd (7:echo, 9:discard, 13:daytime, 19:chargen)

Application	Package	Version	Worked By	Comment
Internet super server
inetd	netkit-combo	0.17	USAGI Project	This code is based on the original netkit package, which is no longer maintained.
rlinetd	rlinetd	0.5.1	Maintainers	rlinetd is an interesting inetd replacement, with advanced socket filtering support and tcp wrapping capabilities.
xinetd	xinetd	2.3.11	Maintainers	xinetd is an incredibly-featureful and almost-bloated inetd replacement, with tcp wrapping capabilities.
g2s server	g2s	0.4.1	Maintainers	g2s server is a featureful inetd replacement, with tcp wrapping capabilities.
openbsd-inetd	openbsd-inetd	0.20020802	Maintainers	openbsd-inetd is a port of the OpenBSD inetd daemon with some debian-specific features. This package does not have many bugs of netkit-inetd and supports IPv6, built-in libwrap, binding to specific addresses, UNIX domain sockets and socket buffers tuning.
Super daemon
tcpserver	ucspi-tcp	0.88	Felix Von Leitner	tcpserver waits for incoming connections and, for each connection, runs a program of your choice. Your program receives environment variables showing the local and remote host names, IP addresses, and port numbers. tcpserver offers also a concurrency limit to protect you from running out of processes and memory and provides TCP access control features, similar to tcp-wrappers/tcpd's hosts.allow but much faster.

4.2. TCP Wrappers

Application	Package	Version	Worked By	Comment
TCP Wrappers
tcp_wrappers	tcp_wrappers	7.6	Maintainers	The development of tcp_wrappers has been stopped and the package seems to be unmaintained.
tcpd	tcpd	0.2.0	Maintainers	The tcpd package is an IPv6-enabled replacement of tcp_wrappers.

5. Sun RPC

5.1. Portmapper (111:sunrpc)

Application	Package	Version	Worked By	Comment
portmap
portmap	portmap	4.0		No plans for IPv6 support are known.
rpcbind	rpcbind	0.1.4	Maintainers	rpcbind is the successor of portmap with native IPv6 support.

6. File Sharing

6.1. SMB (445:microsoft-ds)

Application	Package	Version	Worked By	URLs	Comment	Status
Samba server
smb	samba	3.2	Maintainers		Samba is the open source implementation of the SMB protocol

7. File Transfer

7.1. FTP (21:ftp, 20:ftp-data [active])

Application	Package	Version	Worked By	Comment
FTP server
ftpd	netkit-combo	0.17	USAGI Project	this code is based on the original netkit package, which is no longer maintained
fftpd	fftpd	N/A	Maintainers	the fftpd project is still in its infancy and its author hasn't even given fftpd a version number yet
pure-ftpd	pure-ftpd	1.0.14	Maintainers	pure-ftpd is a secure and featureful FTP server based upon troll-ftpd
wu-ftpd	wu-ftpd	2.6.2	unknown	as wu-ftpd in the last 5 years has been by far the most vulnerable and less secure opensource ftp server, we recommend our readers not to use it. Patch from PLD is no longer available.
ftpd-bsd	ftpd-bsd	0.3.3	Maintainers	this project seems to be unmaintained - please note that versions 0.3.2 and earlier contain a remote exploitable security hole
ProFTPD	ProFTPD	1.2.9rc2	Maintainers	ProFTPD grew out of the desire to have a secure and configurable FTP server, and out of a significant admiration of the Apache web server. The 1.2.9rc2 release of ProFTPD features native IPv6 support.
troll-ftpd	troll-ftpd	1.2.8	unknown	Troll-ftpd is a small, simple server for the old and hairy File Transfer Protocol, designed to use less resources than older servers, be smaller, and to never execute any external program. It supports only the most-used features and commands of FTP, and leaves out everything which is deprecated, meaningless, or correlates with trouble. Patch from PLD is no longer available.
ginseng-ftpd	ginseng-ftpd	1.6	Maintainers	this server is a port of BSD-ftpd to Linux with many custom features
libra-ftpd	libra-ftpd	1.3.4	Maintainers	the libra ftp daemon is an anonymous ftp server for Linux
oftpd	oftpd	0.3.7	Mauro Tortonesi	oftpd is a lightweight anonymous ftp server for Linux - this project seems to be unmaintained
vsftpd	vsftpd	2.0.0	Maintainers	vsftpd is a secure, stable and extremely fast ftp server for Unix systems. It features native IPv6 support since version 0.2.0.
tnftpd	tnftpd	2.0 beta3	Maintainers	tnftpd (formerly known as lukemftpd) is a port of the NetBSD ftp server to other systems that offers many enhancements over the traditional BSD ftpd
publicfile	publicfile	0.52	Felix Von Leitner	publicfile supplies files to the public through HTTP and FTP
moftpd	moftpd	1.1.4	Maintainers	moftpd is a powerful yet easy to use ftp daemon with support for virtual hosts, IPv6, encryption, fine grained permissions and internationalization.
wzdftpd	WZDftpD	0.3.3	Maintainers	wzdftpd is a ftp server designed to be modular, to work under linux/win32/freebsd/openbsd, and to be entirely configurable online using SITE commands.
FTP client
ftp	netkit-combo	0.17	USAGI Project	this code is based on the original netkit package, which is no longer maintained
lftp	lftp	2.6.5	Maintainers	lftp is a sophisticated file transfer program with job control designed with reliability in mind
tnftp	tnftp	2.0 beta1	Maintainers	tnftp (formerly known as lukemftp) is a port of the NetBSD ftp client to other systems that offers many enhancements over the traditional BSD ftp client
cftp	cftp	0.12	Maintainers	c(omfortable)ftp is a full screen ftp client, with SFTP support
ncftp	ncftp	3.1.9	KAME Project	ncftp is a free set of programs that use the file transfer protocol
fget	fget	0.4.1	Maintainers	fget downloads a single URL (possibly including username and password) from an FTP or HTTP server
konqueror	KDE	3.1.2	Maintainers	The wonderful konqueror HTTP/FTP browser included in the K Desktop Environment supports IPv6 since the release of KDE 2.2. Every other KDE component is then supposed to inherit HTTP-over-IPv6 and FTP-over-IPv6 support.
ftpcopy	ftpcopy	0.6.4	Maintainers	ftpcopy is a simple FTP client written to copy files or directories (recursively) from a FTP server. It was written to mirror FTP sites which support the EPLF directory listing format, but it also supports the traditional listing format (/bin/ls) And may also be used to simply copy files. ftpcopy natively supports IPv6 since the 0.6.0 release.
ftpmirror	ftpmirror	1.96	Hajimu UMEMOTO	Ftpmirror is an utility to copy a directory hierarchy with FTP. A similar perl script exists, whose name is mirror, but ftpmirror requires less memory than mirror. You need perl-5.000 or later to use ftpmirror. You will find the IPv6 patch for ftpmirror inside the Socket6-0.11 package, written by Hajimu UMEMOTO.

7.2. RSYNC (873:rsync)

Application	Package	Version	Worked By	URLs	Comment	Status
RSYNC
rsync	rsync	2.5.6	Maintainers		rsync features native IPv6 support since release 2.5.0 but hosts allow/deny in rsync.conf didn't work until 2.5.6.

7.3. TFTP (69:udp)

Application	Package	Version	Worked By	Comment
TFTP server
tftpd	netkit-combo	0.17	USAGI Project	this code is based on the original netkit package, which is no longer maintained
TFTP client
tftp	netkit-combo	0.17	USAGI Project	this code is based on the original netkit package, which is no longer maintained

8. Remote shell/login

8.1. Telnet (23:telnet)

Application	Package	Version	Worked By	Comment
Telnet server
telnetd	netkit-combo	0.17	USAGI Project	this code is based on the original netkit package, which is no longer maintained
Telnet client
telnet	netkit-combo	0.17	USAGI Project	this code is based on the original netkit package, which is no longer maintained

8.2. Secure Shell (22:ssh)

Application	Package	Version	Worked By	Comment
SSH server
sshd	openssh	3.6.1p2	Maintainers	Native IPv6 support since 2000. OpenSSH has been one of the first packages to provide native IPv6 support. Also supports scp and sftp. Can be used to secure-tunnel other applications.
SSH client
ssh	openssh	3.6.1p2	Maintainers	Native IPv6 support since 2000. OpenSSH has been one of the first packages to provide native IPv6 support. Also supports scp and sftp. Can be used to secure-tunnel other applications.

8.3. R-Tools (512/tcp:exec, 513/tcp:login, 514/tcp:cmd)

Application	Package	Version	Worked By	Comment
R-clients
rexec, rlogin, rsh	netkit-combo	0.17	USAGI Project	this code is based on the original netkit package, which is no longer maintained
R-servers
rexecd, rlogind, rshd	netkit-combo	0.17	USAGI Project	this code is based on the original netkit package, which is no longer maintained

9. E-Mail

9.1. Mail Transfer Agents and Mail User Agents (25:smtp)

Application	Package	Version	Worked By	URLs	Comment
Mail Transfer Agents
exim	exim	4.20	Maintainers		Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet. It is freely available under the terms of the GNU General Public Licence. In style it is similar to Smail 3, but its facilities are more general.
zmailer	zmailer	2.99.55	Maintainers		Zmailer is an internet message transfer agent intended for gateways or mail servers or other large site environments that have extreme demands on the abilities of the mailer. The creation of this project was motivated by the problems of the Sendmail design in such situations.
sendmail	sendmail	8.12.9	Maintainers		Sendmail is probably the best known and most widely used mail transport agent in the Internet. However, as its story is full of security problems, we don't recommend its usage.
qmail	qmail	1.03	Felix Von Leitner		qmail is a secure, reliable, efficient, simple message transfer agent. It is designed for typical Internet-connected UNIX hosts. It seems that the development of qmail has been stopped and that the project is unmaintained.
postfix	postfix	native since 2.2.0	Maintainers		Postfix is Wietse Venema's mailer that started life as an alternative to the widely-used Sendmail program. Postfix attempts to be fast, easy to administer, and secure, while at the same time being sendmail compatible enough to not upset existing users. Thus, the outside has a sendmail-ish flavor, but the inside is completely different. Based on patch from Dean Strike.
courier	courier	0.42.2	Maintainers		The Courier mail transfer agent is an integrated mail/groupware server based on open commodity protocols, such as ESMTP, IMAP, POP3, LDAP, SSL, and HTTP. Courier provides ESMTP, IMAP, POP3, webmail, and mailing list services within a single, consistent, framework. Individual components can be enabled or disabled at will.
Mail Retrieval Agents
fetchmail	fetchmail	6.2.2	Maintainers		Fetchmail is a full-featured, robust, well-documented remote-mail retrieval and forwarding utility intended to be used over on-demand TCP/IP links (such as SLIP or PPP connections). It supports every remote-mail protocol now in use on the Internet: POP2, POP3, RPOP, APOP, KPOP, all flavors of IMAP, ETRN, and ODMR. It can even support IPv6 and IPSEC.
Mail User Agents
mutt	mutt	1.4.1	Maintainers		Mutt is a small but very powerful text-based mail client for Unix operating systems that features native support for POP and IMAP over IPv6.
sylpheed	sylpheed	0.9.6	Maintainers		Sylpheed is an e-mail client and news reader based on GTK+ and running on X Window System.
sylpheed-claws	sylpheed-claws	0.9.5	Maintainers		Sylpheed-claws is a bleeding edge branch of the sylpheed e-mail client and news reader, with lots of new features.
KMail	KDE	3.1.2	Maintainers		KMail is the excellent Mail User Agent included in the K Desktop Environment.
mozilla-mail	mozilla	since 1.4	Maintainers		Mozilla is world-class open source browser that is designed from the ground up to support open internet standards across a variety of platforms including Windows, Linux, Mac OS X, OS/2, Solaris, and many more. Mozilla provides users with acclaimed browsing convenience along with power features such as pop-up blocking and tabbed browsing. The Mozilla mail client natively supports SMTP, POP3 and IMAP4 over IPv6. Mozilla 1.4 doesn't fully support IPv6 on the Win32 platform.
thunderbird	thunderbird	since 1.0	Maintainers	</