Questions tagged [ipv6]

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, etc) remain unchanged.

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route ipv4 to ipv6 as mechanism to overcome not owning an ipv4 block for load balancing purposes on premise k8s (none aws/gcp)

This is not a question about tunnelling, although that may be part of a solution. With public cloud providers it's trivial to request a load balancer due to providers owning large class A/B/C public ...
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How to route IPv6 across ports in Cisco ISR

I have a Cisco ISR router with 4 ports. We own our IPv4 addresses and handle them via BGP, but my datacenter provider assigned us a IPv6 network. I've successfully added the IPv6 network to ...
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custom ports in google load balancer for IPv6

I am running an MQTT (on custom port) server on the google compute engine. I need it to run on IPv6 network. After looking at the google docs (https://cloud.google.com/load-balancing/docs/ipv6) I ...
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Forcing the wlan0 interface to send the router solicitation message

I have a small linux system which connects to the wifi router via wireless network. I am trying to enable ipv6 on wlan0 interface. Using SLAAC. Everything is working fine except that whenever I ...
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Server DHCPv6 with Linux Alpine

I want create a server dhcp6 with alpine I'm using Kea-dhcp6. The my file config this is: { # DHCPv6 configuration starts on the next line "Dhcp6": { # First we set up global values &...
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ND Packets get dropped by a router in Packet tracer

I created a simple ipv6 network in packet tracer. I need it for my school project and my problem is, that I have 2 routers: 1 ISP Router with a static IPv6 address and 1 school router that provides an ...
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Inside of my Linux server I can't ping out to IPv6 URLs

Inside of my Linux server I can't ping out to IPv6 URLS. Pinging IPv4 works as expected. For example: $ ping6 google.com I get one line of output and then it sits indefinitely, PING google.com(...
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Q: Configuring dnsmasq to filter A or AAAA queries

Can I configure dnsmasq to respond to either ipv4(A) or ipv6(AAAA) queries only? I am using dnsmasq to forward queries from an internal subnet to a WAN connection. Unfortunately, sometimes I will only ...
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IPv6 configuration on Debian with /48 subnet and PtP address?

(I've asked this question before at https://networkengineering.serverfault.tech/questions/72842/ipv6-configuration-on-debian-with-48-subnet-and-ptp-address but it got closed as off-topic and I was ...
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fail2ban: whitelist IPv6 address

I need to whitelist an ipv6 address in fail2ban, however when I just add them to the ignoreip statement in my jail.conf they get blocked anyways. This is what I have in /etc/fail2ban/jail.conf [...
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DNS SOA record - MNAME is empty (just a zero byte)

Short Question Is an empty MNAME valid at all? Can it ultimately impact clients, like Windows PCs or smartphones? My situation I'm debugging an issue where resolving a host name in an Android app ...
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ipv6 and iptables - setting up basic rules

I have come to realise my IPv6 ports are not going through iptables, and thus are accessible for attacks. I haven't seen any yet, but I'm sure its only a matter of time. As such, I'm trying to shore ...
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Make Docker listen to the IPv6 address of server, forward IPv6 requests to right container

My server is running on both IPv4 and IPv6. Docker is running on (local) IPv4 addresses (ie 192.168.100.1/24). I did not enable IPv6 inside daemon.json as I understand that to be rather buggy and ...
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IPv6 support makes openconnect server vpn connection too slow

I have set up an OpenConnect server (ocserv) on CentOS 8 that is quite fast. However, when I enable IPv6 on it by uncommenting the following line, it becomes painfully slow and upload becomes almost ...
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Redhat 7 - IPv6 does not configure correctly on server bootup, only after resetting interface

we have some RedHat 5 servers which are running IPv4 and IPv6. We are migrating to RedHat 7 and using a similar ifcfg file. When the RedHat7 comes up after a reboot, all of the IPv4 IP's are ok but ...

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