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[[Category:OpenBSD]]
[[Category:Networking]]
== Introduction ==
We will create an IPv6 tunnel (provided by [http://he.net Hurricane Electric] suitable for subnetting (/48).
== Configuration ==
In /etc/hostname.gif0:
tunnel 207.246.122.61 209.51.161.14
!ifconfig gif0 inet6 alias 2001:470:1f06:95f::2 2001:470:1f06:95f::1 prefixlen 128
!route -n add -inet6 default 2001:470:1f06:95f::1
Enable it (as root):
sh /etc/netstart gif0
== Test ==
Check that it works:
freedom# route show -inet6
Routing tables
Internet6:
Destination Gateway Flags Refs Use Mtu Prio Iface
default tunnel521973.tunne UGS 0 44 - 8 gif0
default fe80::fc00:1ff:fed UGS 0 0 - 56 vio0
::/96 localhost UGRS 0 0 32768 8 lo0
localhost localhost UHhl 10 20 32768 1 lo0
::ffff:0.0.0.0/96 localhost UGRS 0 0 32768 8 lo0
tunnel521973.tunne tunnel521973-pt.tu UHh 1 1 - 8 gif0
tunnel521973-pt.tu tunnel521973-pt.tu UHl 0 59 - 1 gif0
2001:19f0:5:11d4:: freedom.mgk.ro UCn 0 0 - 4 vio0
freedom.mgk.ro 56:00:01:d3:aa:bd UHLl 0 0 - 1 vio0
2002::/24 localhost UGRS 0 0 32768 8 lo0
2002:7f00::/24 localhost UGRS 0 0 32768 8 lo0
2002:e000::/20 localhost UGRS 0 0 32768 8 lo0
2002:ff00::/24 localhost UGRS 0 0 32768 8 lo0
fe80::/10 localhost UGRS 0 3 32768 8 lo0
fec0::/10 localhost UGRS 0 0 32768 8 lo0
fe80::%vio0/64 fe80::5400:1ff:fed UCn 1 1 - 4 vio0
fe80::5400:1ff:fed 56:00:01:d3:aa:bd UHLl 0 0 - 1 vio0
fe80::fc00:1ff:fed fe:00:01:d3:aa:bd UHLch 1 5 - 3 vio0
fe80::1%lo0 fe80::1%lo0 UHl 0 0 32768 1 lo0
fe80::%gif0/64 fe80::42bc:4cfd:63 Un 0 0 - 4 gif0
fe80::42bc:4cfd:63 fe80::42bc:4cfd:63 UHl 0 0 - 1 gif0
ff01::/16 localhost UGRS 0 3 32768 8 lo0
ff01::%vio0/32 fe80::5400:1ff:fed Um 0 1 - 4 vio0
ff01::%lo0/32 fe80::1%lo0 Um 0 1 32768 4 lo0
ff01::%gif0/32 fe80::42bc:4cfd:63 Um 0 1 - 4 gif0
ff02::/16 localhost UGRS 0 3 32768 8 lo0
ff02::%vio0/32 fe80::5400:1ff:fed Um 0 1 - 4 vio0
ff02::%lo0/32 fe80::1%lo0 Um 0 1 32768 4 lo0
ff02::%gif0/32 fe80::42bc:4cfd:63 Um 0 1 - 4 gif0
freedom#
freedom#
freedom# ping6 google.com
PING google.com (2607:f8b0:4006:810::200e): 56 data bytes
64 bytes from 2607:f8b0:4006:810::200e: icmp_seq=0 hlim=57 time=2.307 ms
64 bytes from 2607:f8b0:4006:810::200e: icmp_seq=1 hlim=57 time=2.892 ms
^C
--- google.com ping statistics ---
2 packets transmitted, 2 packets received, 0.0% packet loss
round-trip min/avg/max/std-dev = 2.307/2.599/2.892/0.292 ms
freedom# traceroute6 google.com
traceroute6 to google.com (2607:f8b0:4006:810::200e), 64 hops max, 60 byte packets
1 tunnel521973.tunnel.tserv4.nyc4.ipv6.he.net (2001:470:1f06:95f::1) 9.294 ms 6.861 ms 6.119 ms
2 ve422.core1.nyc4.he.net (2001:470:0:5d::1) 2.155 ms 2.158 ms 2.876 ms
3 core1-0-0-8.lga.net.google.com (2001:504:f::27) 1.798 ms 1.815 ms 2.393 ms
4 2001:4860:0:1126::1 (2001:4860:0:1126::1) 3.032 ms 3.619 ms 2001:4860:0:1128::1 (2001:4860:0:1128::1) 2.576 ms
5 2001:4860:0:1::2105 (2001:4860:0:1::2105) 2.89 ms 2.362 ms 2001:4860:0:1::2107 (2001:4860:0:1::2107) 2.052 ms
6 lga34s14-in-x0e.1e100.net (2607:f8b0:4006:810::200e) 2.167 ms 2.114 ms 2.193 ms
freedom#
== Routing ==
Assign IPs to the interface you wish to route to:
freedom# cat /etc/hostname.enc0
inet 172.24.24.1 255.255.255.0 172.24.24.255
'''inet6 2001:470:8c78:''a0''::1 64'''
up
Reconfigure it:
sh /etc/netstart enc0
Enable IPv6 forwarding:
freedom# cat /etc/sysctl.conf
hw.smt=1
net.inet.ip.forwarding=1
'''net.inet6.ip6.forwarding=1'''
Same thing with sysctl (as root):
sysctl net.inet6.ip6.forwarding=1
