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Inconsistent IPv6 prefix printing on webpage
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Topic: Inconsistent IPv6 prefix printing on webpage (Read 949 times)
baryluk
Newbie
Posts: 8
Inconsistent IPv6 prefix printing on webpage
«
on:
February 07, 2011, 11:57:44 am »
hi.
I have two tunnels. As they are displayed on the tunnelbroker.net webpage, their IPv6 prefixes,
are everywhere printed in slightly different maner.
2001:0470:1f0b:123::/64 (via frankfurt)
2001:470:1f15:abcd::/64 (via amsterdam)
Why first one have 0470, and not 470? I know this is not a problem, as this is correct, just strange and mmaybe indication of some nasty bug, which one day can turn into something worse.
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kcochran
Sr. Network Engineer, Hurricane Electric
Administrator
Sr. Member
Posts: 259
Re: Inconsistent IPv6 prefix printing on webpage
«
Reply #1 on:
February 07, 2011, 10:10:28 pm »
Just how entries at that time were entered into the database. There should be no leading zeroes anymore.
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baryluk
Newbie
Posts: 8
Re: Inconsistent IPv6 prefix printing on webpage
«
Reply #2 on:
February 08, 2011, 12:42:48 am »
Thanks, As I see you updated old entries in database.
But it also looks it broken DNS names endpoints. This updated entries do not resolve, and returns NXDOMAIN now.
In the web interface:
baryluk-1.tunnel.tserv6.fra1.ipv6.he.net 2001:470:1f0a:527::/64
but
# host baryluk-1.tunnel.tserv6.fra1.ipv6.he.net. ordns.he.net
Host baryluk-1.tunnel.tserv6.fra1.ipv6.he.net. not found: 3(NXDOMAIN)
#
But after little investigation it looks it changed into slightly differnt name:
# host 2001:470:1f0a:527::1
1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.7.2.5.0.a.0.f.1.0.7.4.0.1.0.0.2.ip6.arpa domain name pointer baryluk.tunnel.tserv6.fra1.ipv6.he.net.
# host baryluk.tunnel.tserv6.fra1.ipv6.he.net.
baryluk.tunnel.tserv6.fra1.ipv6.he.net has IPv6 address 2001:470:1f0a:527::1
#
Similary for tunnel endpoint
# host 2001:470:1f0a:527::2
2.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.7.2.5.0.a.0.f.1.0.7.4.0.1.0.0.2.ip6.arpa domain name pointer baryluk-pt.tunnel.tserv6.fra1.ipv6.he.net.
# host baryluk-pt.tunnel.tserv6.fra1.ipv6.he.net.
baryluk-pt.tunnel.tserv6.fra1.ipv6.he.net has IPv6 address 2001:470:1f0a:527::2
#
Non-updated tunnel works as expected:
# host baryluk-3.tunnel.tserv6.fra1.ipv6.he.net.
baryluk-3.tunnel.tserv6.fra1.ipv6.he.net has IPv6 address 2001:470:1f0a:e05::1
# host 2001:470:1f0a:e05::1
1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.5.0.e.0.a.0.f.1.0.7.4.0.1.0.0.2.ip6.arpa domain name pointer baryluk-3.tunnel.tserv6.fra1.ipv6.he.net.
# host 2001:470:1f0a:e05::2
2.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.5.0.e.0.a.0.f.1.0.7.4.0.1.0.0.2.ip6.arpa domain name pointer baryluk-3-pt.tunnel.tserv6.fra1.ipv6.he.net.
# host baryluk-3-pt.tunnel.tserv6.fra1.ipv6.he.net.
baryluk-3-pt.tunnel.tserv6.fra1.ipv6.he.net has IPv6 address 2001:470:1f0a:e05::2
#
I think all tunnels should have number suffix, as they are displayed in the web interface.
Thanks!
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kcochran
Sr. Network Engineer, Hurricane Electric
Administrator
Sr. Member
Posts: 259
Re: Inconsistent IPv6 prefix printing on webpage
«
Reply #3 on:
February 08, 2011, 12:50:57 am »
That's likely a weirdness between tunnels that predate the current naming scheme. We can't go through and change those DNS entries, as some people may be using them. The old format tunnels weren't marked as such in the broker software, so there's no good way to figure out to display their original hostname, so it's just marked using the current naming scheme.
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