16TUNNEL(1) General Commands Manual 6TUNNEL(1)
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6 6tunnel - tunnelling for application that don't speak IPv6
7
9 6tunnel [ -146dhfv ] [ -u username ] [ -i password ] [ -I password ] [
10 -l local_host ] [ -L limit ] [ -p pid_file ] [ -m map_file ] local_port
11 remote_host [ remote_port ]
12
14 6tunnel allows you to use services provided by IPv6 hosts with
15 IPv4-only applications and vice-versa. It can bind to any of your IPv4
16 (default) or IPv6 addresses and forward all data to IPv4 or IPv6 (de‐
17 fault) host. For example
18 6tunnel -1 6668 irc6.net 6667
20 will be enough to connect to IPv6 irc server with
22 irc foobar localhost:6668
24 If you don't wish to run 6tunnel every time you want to show your
26 :c001: or :dead: IPv6 address on IRC, you can use -i parameter, which
27 makes 6tunnel ask your client for specified password. Just run
28 6tunnel -i dupa.8 31337 irc6.net 6667
30 and then type
32 irc foobar localhost:31337:dupa.8
34 If your IRC server requires you to send password, specify it with -I
36 parameter -- after successful proxy authentication 6tunnel will send it
37 to the server.
38 6tunnel can also be used as a tunnel for all other combinations of IPv4
40 and IPv6 endpoints. If remote host doesn't have any IPv6 addresses,
41 6tunnel will use the IPv4 one. In other cases, use -4 parameter which
42 makes IPv4 address the preferred one. For IPv6-to-any tunnels use -6
43 which makes 6tunnel bind to IPv6 address.
44
46 -1 Exit after first connection.
47 -4 Prefer IPv4 endpoint if the machine has both address types.
49 -6 Listen on IPv6 address (IPv4 is default).
51 -d Don't detach.
53 -f Force tunneling even if remote host is not resolvable at the ex‐
55 ecution time.
56 -h Print hex dump of every packet received or sent.
58 -u username
60 Change UID and GID after bind().
61 -i password
63 Act as an IRC proxy and require user to authenticate.
64 -I password
66 If you are using 6tunnel as an IRC proxy and the IRC server re‐
67 quires you to send password, place it right here.
68 -l local_host
70 Listen on specified address (IPv4, or IPv6 if -6 used).
71 -L limit
73 Limit simultaneous connections.
74 -p pid_file
76 Write down pid to specified file.
77 -s source_host
79 Connect to the remote host using specified source address.
80 -m map_file
82 Binds to specified IPv6 addresses on basis of source IPv4 ad‐
83 dress. The file contains one mapping per line with IPv4 source
84 address and corresponding IPv6 address. Only listed hosts are
85 allowed to connect. If you want to allow any host, add mapping
86 for default or 0.0.0.0 address. Example:
87 192.168.0.2 3ffe:8010:18::1000:2
89 192.168.0.3 3ffe:8010:18::1000:3
90 -v Be verbose and don't detach.
92
94 Option -H to disable all resolver hints has been removed since proper
95 combination of -4 and -6 will yield in any combination of IPv4 and IPv6
96 sources and destinations.
97
99 Sending SIGHUP forces map file reload.
100
102 #ipv6 crew, Lam.
103
105 Terrible man page. Hex dump doesn't include IRC proxy authentication.
106 IRC proxy requires your client to send password first (don't worry
107 ircii, EPIC, BitchX, mIRC and many more will work). No logging except
108 debug output.
109
111 Wojtek Kaniewski (wojtekka@toxygen.net), Dariusz Jackowski (as‐
112 cent@linux.pl), Ramunas Lukosevicus (lukoramu@parok.lt), Roland Stigge
113 (stigge@antcom.de)
114
116 ssh(1)
117 Oct 19, 2019 6TUNNEL(1)