similar to: DHCPv6 prefix delegation

On 4/28/2020 4:22 PM, Chris Adams wrote: > What's in /etc/sysconfig/network-scripts/ifcfg-<name>? I wonder if you > have IPv6 disabled. Pasted below. V6 definitely works. I have a second server and gave it a WAN address and I can connect between them using their WAN addresses. That's what told me that my ip6tables weren't screwed up and that the problem lay elsewhere.

Hello, i try to use (Centos8) NetworkManager builtin Prefix-Delegation for ipv6. Unfortunately i found no howto is helping me. i do: /etc/NetworkManager/NetworkManager.conf: [main] dhcp=dhclient Modify Cons: nmcli con modify LOKAL1 ipv6.method shared nmcli con modify LOKAL2 ipv6.method shared nmcli con modify WAN_TK ipv6.method dhcp Before these modifications i got over pppoe the public

On 4/28/2020 3:17 PM, Chris Adams wrote: > - gateway sends a router solicitation and gets a router advertisement > with "stateful config" set, which tells gateway to do DHCPv6 (but > default route comes from RA) I'm not seeing any outbound IPv6 traffic from my CentOS 7 box on the WAN interface. I do see RA's emitting from the LAN interface, from radvd. Is there

Yamaban wrote: > On Thu, 10 Dec 2015 16:00, m.roth at ... wrote: > >> We've started having a problem with a CentOS 7 server. It looses its >> IPv6 address, if I understand this issue correctly. We can get in, >> if we do ssh -4, though. >> >> In the logs, I'm seeing this about twice an hour: >> <warn> (pid 98466) unhandled DHCP event for

Once upon a time, Kenneth Porter <shiva at sewingwitch.com> said: > On 4/28/2020 3:17 PM, Chris Adams wrote: > >- gateway sends a router solicitation and gets a router advertisement > > with "stateful config" set, which tells gateway to do DHCPv6 (but > > default route comes from RA) > > I'm not seeing any outbound IPv6 traffic from my CentOS 7

Once upon a time, Kenneth Porter <shiva at sewingwitch.com> said: > I just got 50 Mbps symmetric fiber from AT&T and it includes a /56 > of IPv6 addresses, replacing a much slower ADSL line. I never tried > to get IPv6 working on the old connection. I'm using CentOS 7 as a > gateway and it's worked great for several versions for IPv4. > > I'm not seeing any

Once upon a time, Kenneth Porter <shiva at sewingwitch.com> said: > I'm using OpenWrt at home and it's working mostly fine there. Except > with my Android phone. I'm not getting a DNS setting for V6, but I > do have the setting in the router's config file. The Win10 clients > work fine, though. Apparently Android has issues with DHCPv6, and > I'm betting

Machine is an internal server with zero need to provide or receive ip addresses using dhcp (all IPs are hard coded). Question: how do I disable dhcpv6-client on this box? [user at boxname user]# firewall-cmd --list-all public (active) target: default icmp-block-inversion: no interfaces: enp2s0 sources: services: cockpit dhcpv6-client http https ssh ports: protocols: masquerade:

So, I'm seeing a bunch of DHCPv6 traffic coming from my CentOS7 machines. Basically, the machines are trying to send router solicitations, the packets are blocked at their egress firewalls, and I get to see the logs. I don't wish to disable IPv6. I don't wish to statically configure IPv6 at this time. I wish to have the machines no longer attempting to send router solicitations as

--On Tuesday, April 28, 2020 10:16 PM -0500 Chris Adams <linux at cmadams.net> wrote: > I didn't get that you have a static assignment (presumably a business > connection) - they may not do RAs on that (I don't at my ISP job). > Business connections (or at least, connections with static assignments) > tend to operate differently. For that, they should have given you a

Hello; I've run into a rather interesting problem on CentOS 7. According to sysconfig.txt (part of the initscripts documentation), I can set the following variables in ifcfg-ethX: DHCPV6C="yes" DHCPV6C_OPTIONS="-S" I've done so, but nothing is populated to /etc/resolv.conf and so DNS does not work. Interestingly, if I remove the latter option, an IPv6 address is

We've started having a problem with a CentOS 7 server. It looses its IPv6 address, if I understand this issue correctly. We can get in, if we do ssh -4, though. In the logs, I'm seeing this about twice an hour: <warn> (pid 98466) unhandled DHCP event for interface ens3f0 Now, in googling, I get very few hits putting quotes around "unhanded dhcp exception" - in fact, the

I just got 50 Mbps symmetric fiber from AT&T and it includes a /56 of IPv6 addresses, replacing a much slower ADSL line. I never tried to get IPv6 working on the old connection. I'm using CentOS 7 as a gateway and it's worked great for several versions for IPv4. I'm not seeing any IPv6 default route on the WAN interface. I suspect I'm not getting route announcements. I

On 02/14/2017 08:40 PM, Alice Wonder wrote: > Well CentOS 7 doesn't use that, and trying to figure out where in the > mess of /etc/sysconfig/network-scripts the problem is occurring has > caused me much frustration. DHCPv6 is really unusual. IPv6 addressing and routing is set up almost entirely in the kernel, unless you're using static addresses. IPv6 is neither harder

On 8/18/2015 10:46 AM, Alessio Cecchi wrote: > Hi, > > in this tipical setup (Dovecot/Director thate share Maildir via NFS) on > your NFS Server you have (about) 90% of read operations and only 10% of > write operations. > > If you see detailed stats for NFS operations you have 40-50% of GETATTR, > this means that NFS/Dovecot clients are caching data (mainly dovecot >

List: Sorry for posting to this list but could not find step by step instructions anywhere nor get any concerned list to respond. Newbie to DNS technicals but can work with instructions if given in ./configure for complete idiots ;-) 1. I have taken a static IP from my ISP 203.134.221.162 and the ISP has put up an entry in APNIC whois (please check the same)...to me it seems incomplete, as it

Hi, Just out of curiosity what is in nfsv4 delegation that you think would give a benefit on your configuration? If I read back the thread you seem to have dovecot configured with director ring in front of the backends. In that case Dovecot already manages storage in a way that only one of the backends is accessing each users data at a time. So I can?t see anything but problems form enabling

Hi, folks, I and the other admin here have just been assigned a mission... here's what's happening: only very recently - the last week? our CentOS 7 boxes, or at least some of them, will lose their IPv6 addresses, and not get it back. 1. We're running dibbler on the same box that serves DHCP. 2. It's been working for many months. 3. The lease file remains in place.

just a quick update: no issues with NFSv4.0 (load is slowly growing, currently ~7k mailboxes) instead, bad news from delegation front, we enabled it for a couple of days but we ran in ugly issues: processes went in "uninterruptible sleep" state, load average gets huge, reboot was the only escape :-( -brd Alessio Cecchi wrote: > Il 12/06/2015 13:02, brd ha scritto: > >Alessio

CentOS Errata and Bugfix Advisory 2015:1212 Upstream details at : https://rhn.redhat.com/errata/RHBA-2015-1212.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 59346288516ea2b78d52e60a4c6f57efaf5fd52e2439b31c9d1d72007479ed93 dhcpv6-1.0.10-22.el5_11.i386.rpm