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[[!meta copyright="Copyright © 2007, 2008, 2010, 2012 Free Software Foundation,
Inc."]]
[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable
id="license" text="Permission is granted to copy, distribute and/or modify this
document under the terms of the GNU Free Documentation License, Version 1.2 or
any later version published by the Free Software Foundation; with no Invariant
Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license
is included in the section entitled [[GNU Free Documentation
License|/fdl]]."]]"""]]
[[Stefan_Siegl|stesie]] has added IPv6 support to the pfinet [[translator]].
This was [Savannah task #5470](http://savannah.gnu.org/task/?5470).
# Implementation
Because the IPv4 and IPv6 protocols are
quite related to each other (think of mapped IPv4 addresses, etc.), there is no
separate [[server|translator]] for IPv6 but support for the latter has been
incorporated into the common pfinet. Unfortunately it's a little bit clumsy
now to set the [[translator]] up, since it has to be bound to
*/servers/socket/2* (like before) as well as */servers/socket/26* (for IPv6).
To achieve this, you can tell pfinet to install [[active_translators|active]]
on specified nodes, using **-4** and **-6** options. This is, you have to
install a [[passive_translator|passive]] on */servers/socket/2* that also binds
the IPv6 port and vice versa.
# Examples
Normal IPv4 network setup, address 192.168.7.23/24 and gateway 192.168.7.1.
IPv6 address shall be assigned using IPv6 auto-configuration.
settrans -fgp /servers/socket/2 ↩
/hurd/pfinet -6 /servers/socket/26 ↩
-i eth0 -a 192.168.7.23 -m 255.255.255.0 -g 192.168.7.1
settrans -fgp /servers/socket/26 ↩
/hurd/pfinet -4 /servers/socket/2 ↩
-i eth0 -a 192.168.7.23 -m 255.255.255.0 -g 192.168.7.1
Quite the same, but with static IPv6 address assignment:
settrans -fgp /servers/socket/2 ↩
/hurd/pfinet -6 /servers/socket/26 ↩
-i eth0 -a 192.168.7.23 -m 255.255.255.0 -g 192.168.7.1 ↩
-A 2001:4b88:10e4:0:216:3eff:feff:4223/64 -G 2001:4b88:10e4::1
settrans -fgp /servers/socket/26 ↩
/hurd/pfinet -4 /servers/socket/2 ↩
-i eth0 -a 192.168.7.23 -m 255.255.255.0 -g 192.168.7.1 ↩
-A 2001:4b88:10e4:0:216:3eff:feff:4223/64 -G 2001:4b88:10e4::1
# Missing Functionality
Amongst other things, support for [[IOCTL]]s is missing.
## IRC, freenode, #hurd, 2012-12-10
[[!tag open_issue_hurd]]
<braunr> looks like pfinet -G option doesn't work
<braunr> if someone is interested in fixing this (it concerns static IPv6
routing)
<braunr> youpi: have you ever successfully used pfinet with global
statically configured ipv6 addresses ?
<youpi> never tried
<braunr> ok
<braunr> i'd like to set this up on my VMs but it looks bugged :/
<braunr> i can't manage to set correctly set the gateway
### IRC, freenode, #hurd, 2012-12-12
<braunr> hm, pfinet seems not to support ipv6 well at all :(
<pinotree> braunr: really?
<braunr> pinotree: i can't manage to set a global address statically and
make it communicate with neighbours
<braunr> pfinet receives the advertisement (during neighbour discovery) but
immediately resends the same solicitation again
<gnu_srs> According to the pfinet/README IPv6 support was added in 2007
from Linux 2.2.14 while the rest is from 2.2.12
<braunr> according to me, bugs were added at the same time
<braunr> :p
<braunr> in addition, ipv6 in linux 2.2 was, uh, not working well either
<braunr> even with 2.4, it was still messy
<gnu_srs> maybe we should try to upgrade the TCP/IP stack to something
2.6+?
<gnu_srs> (a lot of work though)
<braunr> we've already had that discussion
<gnu_srs> Yes. What is the best way forward, a GSoC task?
<gnu_srs> There is one already:
http://www.gnu.org/software/hurd/community/gsoc/project_ideas/tcp_ip_stack.html
<braunr> personally, i'd advocate resuing code from netbsd
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