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Letharion
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Joined: 13 Jun 2005
Posts: 1344
Location: Sweden

PostPosted: Sun May 09, 2010 7:09 pm    Post subject: ssh over ipv6? Reply with quote

Somewhat naively I thought I could just ssh to IPv6 adresses just like IPv4.

Why does
ssh IPv6
yield
"Network is unreachable"?
Ifconfig shows I have a IPv6 adress myself, and I think I have the necessary support:
Code:
~ # zcat /proc/config.gz | grep IPV6
CONFIG_IPV6=y
# CONFIG_IPV6_PRIVACY is not set
# CONFIG_IPV6_ROUTER_PREF is not set
# CONFIG_IPV6_OPTIMISTIC_DAD is not set
# CONFIG_IPV6_MIP6 is not set
CONFIG_IPV6_SIT=y
# CONFIG_IPV6_SIT_6RD is not set
CONFIG_IPV6_NDISC_NODETYPE=y
# CONFIG_IPV6_TUNNEL is not set
# CONFIG_IPV6_MULTIPLE_TABLES is not set
# CONFIG_IPV6_MROUTE is not set
# CONFIG_NF_CONNTRACK_IPV6 is not set
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truc
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Joined: 25 Jul 2005
Posts: 3199

PostPosted: Sun May 09, 2010 7:15 pm    Post subject: Reply with quote

I've never used ipv6 myself, but 'network unreachable' probably means here you're missing a default gateway. Could you show us your network configuration as well as what you're trying to do?
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Letharion
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PostPosted: Sun May 09, 2010 8:31 pm    Post subject: Reply with quote

truc wrote:
'network unreachable' probably means here you're missing a default gateway.

And right you are. Turns out my ISP doesn't support IPv6 at all because "we have enough IPv4 adress-space, and see no economic motive for IPv6".
I just checked that eth0 had a "inet6 addr", and it does, so I thought I was ready to go.

What I am really looking to do is to make my webservers visible in IPv6-space, this makes it more complicated to verify that I get it right.
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aztech
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Joined: 29 Jul 2002
Posts: 130
Location: Stenungsund, Sweden

PostPosted: Wed May 12, 2010 2:13 pm    Post subject: Reply with quote

Letharion wrote:
truc wrote:
'network unreachable' probably means here you're missing a default gateway.

And right you are. Turns out my ISP doesn't support IPv6 at all because "we have enough IPv4 adress-space, and see no economic motive for IPv6".
I just checked that eth0 had a "inet6 addr", and it does, so I thought I was ready to go.

What I am really looking to do is to make my webservers visible in IPv6-space, this makes it more complicated to verify that I get it right.


If you system has support for IPv6, the you probably have a "local" IPv6 address, attached to your nic,
as in you did not get it from the DHCP-server so you system gave you one .... (the same goes for IPv4)


It does not have to be very complicated at all actually.

Go get your self a ipv6 tunnel at www.tunnelbroker.net
It's free and pretty easy to set up.

Edit.
added - http://www.gentoo.org/doc/en/ipv6.xml#doc_chap2
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