Arch Linux

duare84

Member

Registered: 2022-11-26

Posts: 5

[Solved] dhcpcd: endlessly requesting DHCPv6 information

I'm using dhcpcd with iwd for my wireless connection.

This is what the dhcpcd service is showing:

$ journalctl -b -u dhcpcd.service
Nov 26 09:07:25 arch systemd[1]: Starting dhcpcd on all interfaces...
Nov 26 09:07:25 arch dhcpcd[1026]: dhcpcd-9.4.1 starting
Nov 26 09:07:25 arch dhcpcd[1030]: dev: loaded udev
Nov 26 09:07:25 arch dhcpcd[1030]: DUID X
Nov 26 09:07:25 arch dhcpcd[1030]: no valid interfaces found
Nov 26 09:07:25 arch systemd[1]: Started dhcpcd on all interfaces.
Nov 26 09:07:27 arch dhcpcd[1030]: wlan0: waiting for carrier
Nov 26 09:07:27 arch dhcpcd[1030]: wlan0: carrier acquired
Nov 26 09:07:27 arch dhcpcd[1030]: wlan0: IAID X
Nov 26 09:07:27 arch dhcpcd[1030]: wlan0: adding address X
Nov 26 09:07:27 arch dhcpcd[1030]: wlan0: carrier lost
Nov 26 09:07:27 arch dhcpcd[1030]: wlan0: deleting address X
Nov 26 09:07:27 arch dhcpcd[1030]: wlan0: removing interface
Nov 26 09:07:27 arch dhcpcd[1030]: wlan0: connected to Access Point:
Nov 26 09:07:27 arch dhcpcd[1030]: wlan0: IAID X
Nov 26 09:07:27 arch dhcpcd[1030]: wlan0: adding address X
Nov 26 09:07:28 arch dhcpcd[1030]: wlan0: soliciting an IPv6 router
Nov 26 09:07:28 arch dhcpcd[1030]: wlan0: carrier lost
Nov 26 09:07:28 arch dhcpcd[1030]: wlan0: deleting address X
Nov 26 09:07:28 arch dhcpcd[1030]: wlan0: old hardware address: X
Nov 26 09:07:28 arch dhcpcd[1030]: wlan0: new hardware address: X
Nov 26 09:07:28 arch dhcpcd[1030]: wlan0: carrier acquired
Nov 26 09:07:28 arch dhcpcd[1030]: wlan0: IAID X
Nov 26 09:07:28 arch dhcpcd[1030]: wlan0: adding address X
Nov 26 09:07:28 arch dhcpcd[1030]: wlan0: carrier lost
Nov 26 09:07:28 arch dhcpcd[1030]: wlan0: deleting address X
Nov 26 09:07:29 arch dhcpcd[1030]: wlan0: carrier acquired
Nov 26 09:07:29 arch dhcpcd[1030]: wlan0: connected to Access Point: X
Nov 26 09:07:29 arch dhcpcd[1030]: wlan0: IAID X
Nov 26 09:07:29 arch dhcpcd[1030]: wlan0: adding address X
Nov 26 09:07:30 arch dhcpcd[1030]: wlan0: soliciting an IPv6 router
Nov 26 09:07:31 arch dhcpcd[1030]: wlan0: rebinding lease of X
Nov 26 09:07:31 arch dhcpcd[1030]: wlan0: leased X for 86400 seconds
Nov 26 09:07:31 arch dhcpcd[1030]: wlan0: adding route to X
Nov 26 09:07:31 arch dhcpcd[1030]: wlan0: adding default route via X
Nov 26 09:07:31 arch dhcpcd[1030]: wlan0: Router Advertisement from X
Nov 26 09:07:31 arch dhcpcd[1030]: wlan0: adding address X
Nov 26 09:07:31 arch dhcpcd[1030]: wlan0: adding route to X
Nov 26 09:07:31 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:07:31 arch dhcpcd[1030]: wlan0: adding default route via X
Nov 26 09:07:41 arch dhcpcd[1030]: wlan0: failed to request DHCPv6 information
Nov 26 09:07:41 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:07:51 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:08:01 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:08:11 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:08:21 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:08:31 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:08:41 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:08:51 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:09:01 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:09:11 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:09:21 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:09:31 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:09:41 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:09:51 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:10:01 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:10:11 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:10:21 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:10:31 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:10:41 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:10:51 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:11:01 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:11:11 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:11:21 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:11:31 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:11:41 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:11:51 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:12:01 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:12:11 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:12:21 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:12:31 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:12:41 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:12:51 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:13:01 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:13:11 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:13:21 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:13:31 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:13:41 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:13:51 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:14:01 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:14:11 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:14:21 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:14:31 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:14:41 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:14:51 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:15:01 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:15:11 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:15:21 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:15:31 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:15:41 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:15:51 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:16:01 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:16:11 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:16:21 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:16:31 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:16:41 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:16:51 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:17:01 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:17:11 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:17:21 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:17:31 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:17:41 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:17:51 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:18:01 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:18:11 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:18:21 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:18:31 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:18:41 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:18:51 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:19:01 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:19:11 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:19:21 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:19:31 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:19:41 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:19:51 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:20:01 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:20:11 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:20:21 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:20:31 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:20:41 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:20:51 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:21:01 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:21:11 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:21:21 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:21:31 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:21:41 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:21:51 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:22:01 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:22:11 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:22:21 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:22:31 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:22:41 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:22:51 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:23:01 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:23:11 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:23:21 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:23:31 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:23:41 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:23:51 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:24:01 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:24:11 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:24:21 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:24:31 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:24:41 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:24:51 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:25:01 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:25:11 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:25:21 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:25:31 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:25:41 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:25:51 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:26:01 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:26:11 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:26:21 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:26:31 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:26:41 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:26:51 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:27:01 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:27:11 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:27:21 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:27:31 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:27:41 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:27:51 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:28:01 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:28:11 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:28:21 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:28:31 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:28:41 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:28:51 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:29:01 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:29:11 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:29:21 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:29:31 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:29:41 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:29:51 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:30:01 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:30:11 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:30:21 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:30:31 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:30:41 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:30:51 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:31:01 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:31:11 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:31:21 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:31:31 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:31:41 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:31:51 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:32:01 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:32:11 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:32:21 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:32:31 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:32:41 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:32:51 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:33:01 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:33:11 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:33:21 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:33:31 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:33:41 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:33:51 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:34:01 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:34:11 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:34:21 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information
Nov 26 09:34:31 arch dhcpcd[1030]: wlan0: requesting DHCPv6 information

Every ten seconds this is happening and it never stops. Iwd is not showing anything unusual in the journal.

I'm not sure if this is a dhcpcd issue or if my router is misconfigured. Anyone know why this is happening and how I can tackle it?

Last edited by duare84 (2022-11-29 10:31:23)

Zod

Member

From: Hoosiertucky

Registered: 2019-03-10

Posts: 629

Re: [Solved] dhcpcd: endlessly requesting DHCPv6 information

Does your ISP provide support for IPv6?

If not, disable it.

Lone_Wolf

Member

From: Netherlands, Europe

Registered: 2005-10-04

Posts: 11,911

Re: [Solved] dhcpcd: endlessly requesting DHCPv6 information

The issue doesn't appear to be IPv6, but dhcpcd vs iwd .

dhcpcd creator roy marples prefers to support multi-platform solutions, last time I checked iwd was still a linux exclusive.

You can combine dhcpcd & wpa_supplicant .

Not relavant as seth pointed out.

Last edited by Lone_Wolf (2022-11-27 09:52:05)

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Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.

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seth

Member

Registered: 2012-09-03

Posts: 51,056

Re: [Solved] dhcpcd: endlessly requesting DHCPv6 information

I don't think that iwd per se is a problem here, the connection looks initially unstable but that also doesn't explain the constant dhcp6 queries.
We've actually been there: https://bbs.archlinux.org/viewtopic.php?id=275022 and the OP in https://github.com/NetworkConfiguration … /issues/80 gets this on enp4s0 (ethernet)

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duare84

Member

Registered: 2022-11-26

Posts: 5

Re: [Solved] dhcpcd: endlessly requesting DHCPv6 information

I do have IPv6 and it works flawlessly.

The connection is completely stable, no issues at all with the internet, just the journal being filled with this message.

The "fix" I have been using so far is to set nodhcp6 in /etc/dhcpcd.conf but I was wondering today if anyone had the same issue and knew an actual solution to the problem.

Zod

Member

From: Hoosiertucky

Registered: 2019-03-10

Posts: 629

Re: [Solved] dhcpcd: endlessly requesting DHCPv6 information

I do have IPv6 and it works flawlessly.

not sure about that but as I read this..

https://wiki.archlinux.org/title/IPv6#dhcpcd_2

It seems to me that you have dhcp turned off for v6 but perhaps it's still doing router solicitations?

duare84

Member

Registered: 2022-11-26

Posts: 5

Re: [Solved] dhcpcd: endlessly requesting DHCPv6 information

I mean I can turn off IPv4 and run off IPv6 alone without issues. Also https://ipv6-test.com/ gives me a perfect score, so there is no issue with IPv6 I think. The only thing is the messages in the journal the concerned me.

I set the option noipv6rs from the wiki page @Zod linked and the messages are gone like with nodhcp6. I guess my router is the one not communicating correctly, so not sure if there is more to do here.

Last edited by duare84 (2022-11-29 10:30:43)

-thc

Member

Registered: 2017-03-15

Posts: 499

Re: [Solved] dhcpcd: endlessly requesting DHCPv6 information

Your router is sending an IPv6 router advertisement roughly every ten seconds. Your network stack reacts with an IPv6 router solicitation which triggers the log entries.

I'm interested in the IPv6 configuration of your router: Is DHCPv6 configured and/or necessary?

duare84

Member

Registered: 2022-11-26

Posts: 5

Re: [Solved] dhcpcd: endlessly requesting DHCPv6 information

Here's a screenshot of the options.

This is the configuration I have had since setting it up and never changed.

-thc

Member

Registered: 2017-03-15

Posts: 499

Re: [Solved] dhcpcd: endlessly requesting DHCPv6 information

This looks o.k. - the router doesn't advertise itself as a DNS server. I assume you're setting the DNS servers yourself.

Is there an IPv6 setup page in the router setup? I would like to check if the router advertisement contains the "O" flag.

duare84

Member

Registered: 2022-11-26

Posts: 5

Re: [Solved] dhcpcd: endlessly requesting DHCPv6 information

Is there an IPv6 setup page in the router setup?

No, I only have the option to turn IPv6 on or off.

I will mark this as solved since the options I mentioned in a previous comment technically got rid of the journal messages.