IPv4 was designed in the 1970's and supports just over 4 billion unique addresses. Back then, nobody could ever have imagined the internet becoming what it is today. As of 1 February 2011, the global pool of IPv4 addresses has been depleted, The first regional pool ran out on 15 April 2011, with ...
0
votes
1answer
19 views
IPv6 ULA not working like I want
I'm trying to get IPv6 working for a big school project. I have a Dualstack line with an IPv6 ready modem. The server and client get there IPv6 automatically, but when I want to use static ULA ...
0
votes
2answers
30 views
how to “connect ipv6 client to ipv4 only server”
I have a linux server that supports only ipv4 and an IPv6 client. How should I use tunneling or NAT to get the connectivity done from ipv6 client to the ipv4 server? Client is a softphone that sends ...
5
votes
1answer
39 views
Is it possible to run pre-Lion OS X in an IPv6-only environment without static configuration?
Is it possible to run pre-Lion OS X in an IPv6-only environment without static configuration? From what I've been able to figure out, OS X 10.6.x will acquire an address via SLAAC, but it doesn't ...
0
votes
0answers
17 views
IPv6 on ASUS WL-520GU or other [migrated]
It's coming this summer. IPv6!!!
This DD-WRT tutorial is information overload for me. I can't tell if this would be supported on my ASUS WL-520GU, and I don't see a clear way to make it a secure ...
2
votes
1answer
64 views
How do IPv4 only applications work on IPv6 only hosts?
Is there any way for IPv6-unaware applications to continue to work on a host with only IPv6 connectivity?
The IPv4 implementation of the host could know about the problem and just encapsulate the ...
3
votes
1answer
63 views
What is the motivation for DNS64?
I'm wondering why NAT64 needs something like DNS64 at all.
Couldn't an IPv6-only host, when trying to reach an IPv4-only host, just embed the IPv4 address of the target host in an IPv6 packet (by ...
7
votes
5answers
91 views
Managing parallel rules for ipv4 and ipv6 iptables?
We've recently started experimenting with IPv6, and one of the first issues we're having to contend with is dealing with a completely separate set of firewall (Linux iptables/ip6ables) rules for the ...
0
votes
0answers
21 views
MacBook Pro wants to connect to IPv6 addresses for some strange reason [migrated]
A very weird behavior on a MBP. It seems that some websites are now advertising Ipv6 addresses (e.g., www.doodle.com, addons.mozilla.org, etc.).
For some reason, even though I only have an Ipv4 ...
6
votes
4answers
521 views
Advantages of IPv4 over IPv6
In theory, how IPv4 is better than IPv6? I need only advantages of IPv4 for study purposes.
In another words - what are the pros of IPv4?
0
votes
1answer
47 views
Name resolution in an IPv6 network without a DNS server
Background:
I have a network with Windows and Linux machines
The router doesn't support IPv6, but the computers have link-local addresses (fe80::/10), and I plan to buy an IPv6-capable router in the ...
1
vote
2answers
77 views
Debian: IPv6-in-IPv4 over OpenVPN
Following (roughly) the instructions https://www.zagbot.com/openvpn_ipv6_tunnel.html at I now have the following:
Client
martin@theoria:~$ ifconfig
eth0 Link encap:Ethernet HWaddr ...
-2
votes
2answers
111 views
FreeBSD 9.0 supports only IPv6. What this practically means?
I have very scarce knowledge of IPv6 but I'm considering installing FreeBSD on an RDC device which acts as a server to my home network running services.
The last release states that one of the changes ...
1
vote
1answer
25 views
IPv6 MTU and MSS ignored in LAN?
I have a server with a (sixxs) IPv6 tunnel and a local network behind it. The tunnel has MTU of 1470, and a prefix with this MTU is advertised by radvd, and picked up by the local client:
...
1
vote
1answer
88 views
Can't ping using IPv6 address
My network setup is very simple: two win7-64 machines connected to a switch. IPv6 enabled for their network interface. No router no outside network no DHCP.
ipconfig report for the computer shows ...
7
votes
2answers
157 views
IPv6 without nat but what about an isp change?
I haven't worked with IPv6 outside of 4to6 tunneling on my home pc with stuff like GoGoNet. I've read about how it works in a general way. No NAT required (or suggested) and each client uses a public ...
0
votes
0answers
74 views
route all internet traffic via a virtual tap device and a public server on windows
We want to route all traffic from one pc to a local virtual device (TAP-Win32 Adapter which is also used by OpenVPN) and then from there to another tap device on a public server. after that all ...
0
votes
0answers
34 views
How to route all internet traffic via a virtual tap device and a public server
We want to route all traffic from one pc to a local virtual device (TAP-Win32 Adapter which is also used by OpenVPN) and then from there to another tap device on a public server. after that all ...
0
votes
1answer
65 views
IPv6 only subdomain
I have a domain and shared hosting at godaddy. I've created a subdomain and added an ipv6 proxy from sixy.ch in my aaaa records. Nov I have IPv4 a v6 connectivity too, but i want to block access from ...
0
votes
0answers
20 views
How can I make localhost resolve to 127.0.0.1 instead of ::1? [migrated]
When I ping localhost the address resolves to the ipv6 loopback of ::1
My MySQL and Apache installations expects the ipv4 address of 127.0.0.1
How can I configure my WindowsXP to resolve localhost ...
0
votes
1answer
56 views
ipv6 port redirect? (for mirroring the host's ip4)
Is it possible to do some port redirection on linux for IPv6 alongside the IPv4 redirection?
The point is to make all the various services — that are running on separate hosts / virtual systems — ...
1
vote
4answers
141 views
How can I make my web server reachable via IPv6 on the AWS platform?
My business's web site uses the AWS platform. I want the site's visitors to be able to reach my content using the IPv6 protocol. How can I add an IPv6 address?
0
votes
1answer
76 views
dante-server not working with ipv6
I always get
Error = 0x08 (Address type not supported)
when I try to open ipv6 addresses like ipv6.google.com via my dante-server.
How do I get danted to work with ipv6?
1
vote
0answers
54 views
Disable inet6 link-local address from one interface
Anyone know how I can disable the link-local address from just one interface on CentOS 5.6?
This is what I tried:
root-> egrep -i ipv6 /etc/sysconfig/network-scripts/ifcfg-eth0
IPV6INIT=no
...
0
votes
1answer
57 views
ipv6 max_addresses in sysctl.conf (Debian 6)
I'd like to assign any number of IPv6 addresses to a Debian 6 host, but I see the following setting, and want to know what are the consquences of setting higher, or does this setting approach limits ...
14
votes
3answers
252 views
What are the IPV6 reserved address spaces?
I'm converting my good old IPV4 based iptables firewall script and would like to substitute the CLASS A/B/C/D/E reserved address spaces to the ones found in IPV6. My goal is to deny any packets that ...
2
votes
1answer
35 views
DHCP v6 Option for Circuit ID
DHCP v4 has Circuit ID option(82:1) for defining the actual interface ID of the Client.
What is the equivalent option in DHCPv6?
3
votes
1answer
108 views
Subnet Masking in IPv6
I know within IPv4 subnet masking, the network is determined by either the 1st, 2nd or 3rd set of octets. Being there are so many more characters in IPv6, how do you determine the subnet mask?
3
votes
1answer
131 views
Renting a IPv4 address block [closed]
I am building a lab network with about 10 virtual routers and 20 host machines (also virtualized) as a part of a school project. The aim is to demonstrate a wide range of IPv6 routing, deployment and ...
0
votes
1answer
60 views
Communication problems on secondary interface tap0
I am using UDP over ipv6 as communication stack.
I have network client running on secondary virtual interface tap0. It generates messages for server which is supposed to run on the same interface but ...
4
votes
3answers
145 views
IPv6: Can one use more than 64 bits for the network ID
Wikipedia states:
Unicast and anycast addresses are typically composed of two logical parts: a 64-bit network prefix used for routing, and a 64-bit interface identifier used to identify a host's ...
2
votes
1answer
86 views
Linux does not get IPv6 default gateway from Cisco ASA5510 on autoconf
My ASA 5510 has the following configuration for an interface. My Ubuntu box (2.6.35) connected to this network will correctly autoconf an IPv6 address, but it will not set a default route.
interface ...
-4
votes
3answers
137 views
Can I figure out if my server has IPv4 or IPv6 from a CLI?
Is there any method (via CLI) of knowing if the server I'm at has IPv4 or IPv6?
EDIT: As for the reason why I'm asking this question (apologies if I wasn't specific enough), I'm referring to this ...
1
vote
1answer
49 views
net.ipv6.conf.all.forwarding = 1 is an unknown key
I have few system with ipv6 addresses. I want to forward request from one system to another. hence I kept the option
net.ipv6.conf.all.forwarding = 1
in sysctl.conf
but the request is not getting ...
1
vote
2answers
96 views
IPv6 configuration SIOCSIFADDR file exist
I am configuring IPv6 address in a Debian machine, and this is what I have in my interface file.
auto eth0
iface eth0 inet6 static
pre-up modprobe ipv6
address 2001:23:207:141:0:0:0:0
...
2
votes
2answers
51 views
OMSA only work for IPv6?
I have installed OMSA on a server and the dsm_om_connsv service is running. I have found, in the past, this always binds to an IPv6 socket only;
# netstat -lnp
Active Internet connections (only ...
2
votes
1answer
77 views
IPv6 nameservers but no AAAA record?
I'm trying to understand the network I'm part of. It has a couple thousand computers and the backbone routers are supposed to be IPv6, but the firewalls are not, thus there is a hypothetical IPv6 ...
1
vote
2answers
79 views
Subnetting IPv6 addresses/routes
I would like to subnet the default IPv6 route into 2 network routes. The original default route was:
default via fe80::218:74ff:fe27:9640 dev eth0 proto kernel metric 1024
I tried adding the ...
2
votes
1answer
78 views
DHCP IPV6 Environment
May I know what are the changes needed in the DHCP message formats if I want to convert into ipv6 environment?
Now I am using ipv4 dhcp client and ipv4 dhcp server. But I want to implement this using ...
2
votes
3answers
147 views
setting static ipv6 address in ubuntu
I'm trying to add an ipv6 address to an already existing interface, which previouosly only had ipv4. This is my config:
auto lo
iface lo inet loopback
auto eth8
iface eth8 inet static
address ...
2
votes
3answers
80 views
How to set apache virtualhost to work with ipv6?
I've got server with 1 ipv4 address and with a few ipv6 addresses.
One domain is redirected to ipv4 A record
I set up apache ports.conf like this:
Listen ip.v4.address:80
NameVirtualHost ...
0
votes
1answer
34 views
IPv6 Virtual Network in Linux
I'm going to do a project based on IPv6 Network. So I need to create a IPv6 Virtual Network in my Linux OS (I use Ubuntu). Also I need to create some virtual hosts in my virtual network and setup ...
0
votes
1answer
55 views
IPv6 and IPv4 dual Connection [closed]
Our college has a fully IPv4 LAN connection, provided with a proxy server in the Border.
And three Internet service provider provide the net connection in our college.
Now one ISP is going to provide ...
2
votes
1answer
68 views
DNS servers via RA in IPv6
Some time ago, RFC 6106 was created, which states how a router tells the clients about the DNS server to be used.
It is a new standard, it has to be implemented, which needs time etc.
I'm courious ...
-2
votes
3answers
113 views
Connectivity of IPv6 With IPv4 host
I'm recently working on a project, in which we are provided two network one with IPv6 Connectivity only and other with IPv4 Connectivity only.
These two networks are connected to each other with a ...
6
votes
1answer
108 views
Which regulation does this sentence about IPv6 refer to?
"For this, you need to obtain an IPv6 address from your ISP.
Technically this could be a /128 prefix (exactly one IPv6
address), but according to regulation it needs to be at least a /64 ...
1
vote
1answer
76 views
Pings not answered when IPv6 Support enabled in Windows 7 Ultimate 64-bit
I have Dnsmasq configured on my network to give names to various IPv4 IP addresses on the network.
Pinging the other machines using their DNS names work fine when I have just IPv4 enabled on my ...
1
vote
0answers
79 views
Cisco 877 responds to IPv6 ping from internet, doesn't respond to internal clients
I've got a strange issue with a Cisco 877 and ipv6. My ISP provides me ipv6 connectivity natively, and the router is configured with the first address of the subnet I'm provided. On my network are ...
0
votes
1answer
145 views
Vyatta 6.2 IPv6 DNS handout
I have a Vyatta server which I have connected to Hurricane Electric. I have setup the RADVD on the box and my LAN clients get a public global IPv6 address and route through the Vyatta box.
Where do I ...
6
votes
3answers
191 views
What are the downsides of enabling IPv6 in public-facing services?
Our internal network and internal services are IPv6-enabled, and we're considering enabling IPv6 on public-facing SMTP, DNS and Web servers. All the guides / whitepapers I've read on the subject speak ...
1
vote
2answers
127 views
IPv6-only client to IPv6/IPv4 dual stack server tunnel?
I have a IPv6-only client and a IPv6/IPv4 dual-stack server. The client can connect to the server via IPv6. I want to set up a tunnel on the server so the client can access IPv4 resources through the ...
