IPv6 is the successor to IPv4. Rather than 2^32 addresses (like IPv4), it has 2^128, which is 340,282,366,920,938,463,463,374,607,431,768,211,456 unique addresses (34 undecillion). IPv6 addressing is quite different to IPv4 and is not backwards compatible, but protocols that sit on top (HTTP, SSH, ...

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Can you enable IPv6 anycast on a Microsoft DNS server?

I have an anycast address assigned to a Windows 2012R2 server and I can ping it from across subnets. The DNS service doesn't see it as an address it can listen on and nslookup (from the server itself)...
3
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2answers
91 views

How can Apache be configured to listen on a single IPv6 address which does not belong to an interface?

I'm trying to set up multiple Apache SSL vhosts, each on a different IPv6 address. My CentOS7 VPS has a routed /64 IPv6 block assigned to it, let's say 2001:db8:acac:acac::/64, and I can already see ...
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1answer
48 views

Using CloudFormation, I cannot get an AAAA record to work with ELB

I have the following two CloudFormation resources: "TestELB" { ... }, "TestRecordSetGroup": { "Type": "AWS::Route53::RecordSetGroup", "Properties": { "HostedZoneName": "example.com.", "...
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41 views

ipv6 rDNS with bind

Maybe I just can't wrap my head around ipv6 yet but I'm having trouble returning DNS entries for rDNS. Considering the ipv4 scheme, the following is what I'm aiming for: internal.example.com should ...
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0answers
60 views

Openvpn client frequently uses a different IPv6 address causes a unstable connection

I set up an OpenVPN server on IPV6 recently, it runs well, except for one thing: the client loses connection frequently for Inactivity timeout (--ping-restart). Here's the log infomation on the client....
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2answers
105 views

How to connect a client behind a NAT router to an Asterisk server behind a NAT router?

I have an asterisk setup on a server. The local IP address is 172.22.9.200 and extenal IP address is 75.45.185.100. My client device is an android phone that is connected to a router and it which ...
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3answers
63 views

IPv6: Creating ranges, range values

So I've just been assigned a /64 IP address range. I'm using SolusVM to manage virtual machines. With the /64, I am given the first 4 (octets? I think they're called) so my format is currently XXXX:...
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2answers
124 views

Hosting is IPv4 only, can I have IPv6 clients?

My hosting is IPv4 only. My question is whether it is possible to allow IPv6 only clients to access my web (running Window Server 2012 R2). Is this possible using technologies like 6to4 or Teredo or ...
2
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1answer
163 views

Multiple default IPv6 gateways

Why is not possible to have multiple default IPv6s gateways configured? On Linux I'm not able to execute two "ip -6 route add default via [gw_ip]", while I'm able to do so with IPv4.
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0answers
43 views

Windows Firewall Connection Security, require encryption with IPv6?

I've set up Windows Firewall on a Server 2012 R2 to always require IPSec Encryption for all Connection Security Rules. I've then specified Inbound Rules for specific ports and services, and ...
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0answers
30 views

In IIS8, does All Unassigned include ipv6?

In IIS8, when editing the site bindings, does selecting All Unassigned in the IP address dropdown box include IPv6 addresses?
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2answers
138 views

Dual stack linux router, can't forward IPv6 prefix

I have a small offic here with a few workstations and I would like to implement a small server for stuff like a proxy server, samba etc. This is the topology of said network: +-----+ dynamic +---...
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1answer
129 views

nginx virtual hosts not working after enabling IPv6

I've just enabled IPv6 on my nginx 1.8.0 webserver based on Debian Jessie. To do this I've edited my Virtual Host-Config: server { listen 80; listen [2001:1608:10:160:34::2]:80; ...
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0answers
188 views

Build IPv6 over IPv4 tunnel between server and home network

On one side I have an Ubuntu server in a data center that has IPv6 connectivity. The eth0 interface has a public IPv4 and also a public IPv6 /48. From that server I can ping IPv6 addresses OK. On the ...
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0answers
113 views

Routing IPv6-traffic from client via OpenVPN-server

For playing and learning purpose i set up an OpenVPN-server. Im currently attached to a network without IPv6. Because of that, I would like to route all IPv6-traffic via the VPN. With IPv4 and ...
1
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1answer
179 views

Are there Windows services which only run on IPv6?

This network has about 30 Windows-10 computers and all DNS, DHCP, Active Directory, etc. services are provided by Windows 2012 R2. Are there any native services; be it critical, optional, useless, or ...
3
votes
1answer
154 views

Logstash - Graph IPv4 vs IPv6

I'm looking at starting to graph inbound connections to our various services (web, mail, dns etc) by IP version, ie IPv4 connections versus IPv6 connections. Currently the IPs are being stored in a ...
4
votes
1answer
1k views

Mikrotik: how to properly setup IPV6 routing/dhcp server

I have the following configuration in my network: ISP Router <- eth1 -> Mikrotik Router <- eth2-5 -> Internal network My ISP router receives a /64 IPV6 block that is dynamic, changing ...
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0answers
32 views

Multiple IP's on the same bridge

I'm setting up a Ubuntu host machine for a couple of kvm virtual machines. Here is my interface config file: # config block 0 auto lo vmbr0 iface lo inet loopback iface vmbr0 inet static address ...
0
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0answers
99 views

IPv6 routing in Routing & Remote Access Services VPN

I am trying to configure IPv6 IP Pool on Microsoft RRAS VPN Server the RRAS server is assigning the IPv6 IP Address to the remote access clients but when I test the IPv6 address assignment from "test-...
0
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0answers
65 views

Permission denied on mount via ipv6

There is a ubuntu machine with these addresses root@soup:/# ifconfig eth1 eth1 Link encap:Ethernet HWaddr 08:00:27:09:90:1c inet addr:192.168.56.101 Bcast:192.168.56.255 Mask:255.255.255.0 ...
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0answers
91 views

My server doesn't respond to ping6

I'm trying to enable ipv6 on my webserver. The server runs FreeBSD 10 and I'd like to enable ipv6 access to my websites. That's the long term goal. The goal here would be at least to have a server ...
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0answers
72 views

Configure ipv6 to ipv4 tunnelbroker under linux

I'm running arch linux, with a ipv4 only ISP. I want to test how good my servers work with ipv6, especially my websites. So I set up an account at tunnelbroker.net (hurricane electric) and created a ...
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0answers
19 views

Mapping or conversion between ULA and link-local addresses in IPv6

Is it possible to deterministically jump (convert) from ULA to link-local addresses on a IPv6 network.
2
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1answer
92 views

ProFTPD IP masquerade just some ways

I am trying to setup a FTP server using ProFTPD on Xubuntu 15.10. Users will connect to this server in two ways: internally (using an internal IPv4 address) externally (using domain name pointed to ...
2
votes
0answers
135 views

Limit odhcpd SLAAC / RA to specific MAC addresses

I am trying to set up my OpenWRT powered router to give me IPv6 connectivity via tunnelbroker.net (he.net). I am using OpenWrt Chaos Calmer 15.05-rc2. Creating the tunnel works fine, but I'd like to ...
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0answers
197 views

ssh connection very slow and delayed [duplicate]

I have recently created and configured an ubuntu server 14.04.3 with the help of the ubuntu-core tools. Networking with IPv4 and IPv6 works fine for me with different clients. But a few days ago, i ...
1
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1answer
538 views

IPv6 Neighbor Discovery/Routing Failing for Kernel 3.10

Stupid mistakes led to all of this, read Update 5 I'm trying to setup a Linux Router (LXC, 3.10.0-123.el7.x86_64) with IPv6. The provider is Hetzner and I got 2 subnets, one /56 and a /64. They ...
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votes
0answers
21 views

How to connect internal IPv6 to IPv4 network

For the past few days Im having "fun" checking different NAT configuration options on srx240. Im looking for a way to enable lab PC connection to internet. Is it possible with this spec, or do I have ...
3
votes
0answers
329 views

IPv6 only server PXE provisioning

We are currently preparing for IPv6 only network deployment and struggle to find a unique server identification. In our previous setup, we used mac address as servers primary identification. We were ...
4
votes
3answers
8k views

sendmail can not deliver to gmail - IPv6 sending guidelines regarding PTR records not met

I am having trouble in delivering mail to google from a fresh sendmail install on ubuntu 14.04. The DNS-records seem to be fine for the ip. Something else must be wrong. Sending mail from command ...
0
votes
2answers
169 views

Using IPV6 with Dante

I have a server with one ipv4 ip and plenty of ipv6 ips. i would like to setup Dante to work as a socks proxy server in my server. I need to assign different port to each ipv6 port. Now i can use ...
1
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3answers
1k views

Debian 8 resolv.conf overwritten by IPv6 autoconfiguration/DHCP when DHCP disabled

I have recently installed Debian 8 on a network with IPv6 DHCP Enabled. /etc/resolv.conf is being overwritten by the IPv6 DHCP entires continually despite the fact that all IPv6 DHCP is disabled, ...
1
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1answer
57 views

OpenLDAP using ipv6 link-local address “Can't contact LDAP Server (-1)”

I'm trying to use IPV6 to connect to my LDAP server. Everything works if I use ipv4 but I'm not ipv6 link-local address. I used the following command on my server using its own ipv6 address. Any clue ...
0
votes
0answers
77 views

ISC DHCPv6 reservation

I've set up ISC DHCPv6 server on a CentOS 7. Here is the /etc/dhcp/dhcpd6.conf: authoritative; option dhcp6.domain-search "example.com"; default-lease-time 3600; max-lease-time 7200; log-facility ...
11
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0answers
561 views

Getting Squid and TPROXY with IPv6 working on CentOS 7

I'm having trouble getting TPROXY working with Squid and IPv6 on a CentOS 7 server. I was previously using a generic intercept setup with NAT, but it was limited to IPv4 only. I'm now expanding the ...
3
votes
1answer
229 views

NRPE allowed_hosts name resolution with IPv6

A fully IPv6 dual stack enabled network is monitored by Nagios 3.5.1 installed from EPEL on a CentOS 6.7 server. Monitored hosts run NRPE agents, all of which are configured to run as daemons (not via ...
1
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3answers
126 views

Why only a single loopback address on IPv6?

IPv4 allocates a whole block of IPv4 loopback addresses, 127.0.0.0/8. IPv6, in contrast, only allocates a single loopback address, ::1. This seems surprising that IPv6 would be so stingy in its ...
1
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0answers
67 views

Radvd sending advertisement to the wrong interface

I have the following radvd.conf file: interface eth0 { AdvSendAdvert on; MinRtrAdvInterval 30; MaxRtrAdvInterval 100; route 2000:e000:0:2::/64 { ...
1
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0answers
178 views

Enabling IPv6 for docker breaks hosts IPv6 connectivity resulting in neither having IPv6 connection

Preface: I am newbie in both Docker and networking stuff, especially, IPv6. Am a software developer, not system/network administrator. I am running Arch on Linode and am looking to set up Docker with ...
0
votes
1answer
36 views

IPv6- loopback and link local addresses

Good Afternoon, I'm a bit new to IPv6 and am curious on a couple of things. The loopback address is reserved as ::1 /128. If the mask is /128, wouldn't that indicate no available bits for hosts as ...
0
votes
0answers
15 views

Setting up IPv6 without public prefix [duplicate]

I am not a network engineer, but fill the role at a small company. I am pretty good with IPv4 but am struggling a bit to get things setup with IPv6. The situation I find myself in is that I have 3 ...
0
votes
0answers
151 views

IPv6 VPN routing to IPv4 network

I have been trying to solve my problem to access an IPv6 network from an IPv4 VPN connection for two days now. My setup is as follows: Local Debian IPv4 server <-- OpenVPN --> Remote IPv4/IPv6 ...
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votes
1answer
28 views

How many available IPv6 multicast prefixes are there?

How many freely available multicast prefixes are there? The RFC specifies every ff00::/8 as the required prefix. Accordingly, there are 16*16 = 256 multicast prefixes. However, a large part are ...
0
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1answer
42 views

Name for IPv6 nameserver

I have a few name servers for my dns system. Let's say they are ns1.example.com, ns2.example.com. Previously they all resolved to IPv4 addresses. Now I'm planning to implement IPv6 for my dns system. ...
0
votes
1answer
95 views

Additional static IPv6 address on Ubuntu 14

My ISP gave me a /64 IPv6 subnet, so I'm trying to add a static IPv6 address on top of the one that is already configured in my Ubuntu 14.04.3 LTS. So far, all my attempts failed and I don't know ...
1
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0answers
123 views

IPv6 Ubuntu - Not routing IPv6 to LAN

I'm trying to routing my ISP IPv6 to my LAN. Everything seems ok but clients (on Win7, Ubuntu) not reaching any IPv6 network. Something is missing but idk what. Thanks. ISP Router <-> eth1 ...
1
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2answers
98 views

IPv6 IPsec between two native IPv6 networks

Assume I have two networks, A and B, on sites either side of the globe. Both have native IPv6 and are using (hypothetically) just IPv6. IPv4 no longer exists. They can both access the internet ...
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1answer
305 views

Prevent IPv6 address being exposed when connected to IPv4 only OpenVPN

I have a OpenVPN server which has IPv4 only. I have a OpenVPN client which has IPv6 and IPv4. While connected to the VPN the client is exposed to "IPv6 leak". When client visits IPv6 enabled web ...
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3answers
969 views

Configure static IPv4 and IPv6 address in OpenSuse 13.2

Please help me to configure both IPv4 and IPv6 address to device eth0 in OpenSuse 13.2, i tried with the following parameters on ifcfg-eth0: BOOTPROTO='static' NM_CONTROLLED='no' USERCONTROL='yes' ...