Internet Protocol version 6 (IPv6) is the latest version of the Internet Protocol (IP), the communications protocol that provides an identification and location system for computers on networks and routes traffic across the Internet.
Questions tagged [ipv6]
532 questions
18
votes
4 answers
IPv6 addressing, dynamic prefix static local part
The router on my network hands out an IPv6 prefix assigned by my ISP. This prefix is dynamic but "fairly sticky".
I would like my machines to automatically pick up the prefix advertised in the RAs, but combine it with a user-specified local part…
plugwash
- 4,352
7
votes
2 answers
IPv6 scope ID in /etc/hosts
I'd like to setup a static hostname for an IPv6 address on local network. It seems, however, that /etc/hosts won't accept a zone ID - when I append a zone ID to an IPv6 address, it acts as if the host is not defined. Without the zone ID,…
kralyk
- 314
5
votes
1 answer
How can I resolve MAC knowing ipv6 addr w/o ip command?
I installed OpenWrt on my router and I wanted to get MAC address of some machine connected to it.
With ipv4 I would use arp command. But I want to resolve HW address knowing ipv6 addr. I have read that ipv6 has ndp protocol replacing arp and the…
Kirill
- 995
4
votes
2 answers
How can I add an IPv6 gateway?
For example:
ip -6 route show | grep ^default
There is no output. So there's no default gateway for IPv6.
also I see some complains from the kernel side of things:
dmesg | grep IPv6
eth0: no IPv6 routers present
Also, I see that I only have a…
drpaneas
- 2,320
3
votes
2 answers
IPv6 address range for LAN static IP assignment
When assigning static IPs for my IPv4 LAN I select a range of addresses from my router's DHCP range. 192.160.0.2-255. So I set the upper limit of the DHCP range and choose static IPs above that limit.
With my IPv6 router, I see the same offering of…
Stephen Boston
- 2,178
- 4
- 32
- 55
3
votes
1 answer
Manually configure ipv6 address in 2 different subnets
I have a following setup
Linux1---------------Linux2------------------Linux3
(eth0) (eth1) (eth0) (eth0)
I have this in a local network i.e the Ethernet cables are connected directly.I am configuring the IPV6 address for…
kishore .
- 485
2
votes
0 answers
Why tcptrack shows speed in negative number for low speed IPv6 connections?
I frequently use tcptrack to track ongoing TCP connections on my server. One thing I have observed is that it shows negative speed for TCP/IPv6 connections with low bandwidth consumption for example a less active SSH session. Following is an example…
Abhik Bose
- 2,118
2
votes
0 answers
bind gunicorn to IPv6 localhost - binds to '[::]:8000' instead of '[::1]:8000'
According to gunicorn docs and wikipedia and other sources across the web including other questions in SO The correct value of the "localhost" or "loopback" for an IPv6 address is the value [::1] but when binding it in gunicorn command:
gunicorn -b…
Avishay Cohen
2
votes
1 answer
IPv6 addresses on interface not responding to NDP packets on other interface
From a given computer that has a enp3s0 interface on 192.168.2.0/24 and 2001:44b8:4112:8a02::/64, if I do the following:
canidae# ip link add dummy0 type dummy
canidae# ip addr add dev dummy0 2001:44b8:4112:8a02::55
canidae# ip addr add dev dummy0…
Penguin Brian
- 131
- 2
2
votes
3 answers
System with just IPv6, not IPv4?
https://web.archive.org/web/20160528234959/https://wiki.freebsd.org/IPv6Only discusses a FreeBSD image that supported only IPv6, not IPv4. That page is no longer live, though (hence my archive link), and I can't find anything more recent about this.…
2
votes
1 answer
IPv6 delete route
Some times ago I played around with the IPv6 routes and I made confusion :) That is my routing table
root@banana:~# route -6
Kernel IPv6 routing table
Destination Next Hop Flag Met Ref Use…
Federi
- 963
- 8
- 27
- 38
1
vote
1 answer
Problem accessing a unique local address on IPv6
I'm quite new to the IPv6 world.
I'm trying to ping the address fc00::a6:32:67:c9:23 from another host on the same network but it doesn't work so far (although I am able to ping the device with the Link-Local unicast address).
The network…
Jona
- 147
1
vote
1 answer
CloudLinux 8 server lacks IPv6 Default Gateway
I run CloudLinux 8 with cPanel, and I followed the guide at https://docs.cpanel.net/knowledge-base/general-systems-administration/how-to-get-started-with-ipv6/#add-a-single-ipv6-address-to-your-server and added the following to…
user12207241
- 127
1
vote
1 answer
Why do I have to add a /128 ipv6 address explicitly to a device if I have a /64 already?
On a Fedora server, I have the following line in my /etc/sysconfig/network-scripts/ifcfg-eth0:0:
IPV6ADDR=:48ea::1/64
Now binding to that specific address works:
$ nc -l :48ea::1 1025
However, binding to another address in the…
Pierre Prinetti
- 138
- 6
1
vote
1 answer
Adding IPv6 breaks StackExchange
I added IPv6 on my Ubuntu 14.04.3 LTS laptop by adding an OpenVPN tunnel to my Ubuntu 14.04.3 LTS server that has IPv6. I am using masquerading on both IPv6 and IPv4.
Using StackExchange used to have a regularly updated count of updated/new…
Skaperen
- 716