Arch Linux

bastardo

Member

Registered: 2008-11-29

Posts: 15

Network-Manager update breaks hostname sending to DNS server [solved]

Hi everybody,

just a heads up in case somebody runs in the same problem:

Problem:
Since end of February 2015, I got multiple reports of people unable to reach their system from the outside by hostname. Our DNS database actually showed no hostname attached to their IP. This worked before.

Systems:
They use standard NetworkManager, wired ipv4 connections and retrieve their address and domainname via dhcp, no custom configurations at all.
/etc/dhclient.conf did not exist.

Possible explanation:
https://projects.archlinux.org/svntogit … 57d17b6cdb

I guess before 14.02.15 they used dhcpd to get their ip via networkmanager. <- Can't really explain this one, because their config file is standard and hence they should have used dhclient by default.
After 14.02.15 dhcpd was disabled in NM and they switched back to dhclient, for which they didn't have a config file.

Solution:
Create /etc/dhclient.conf if it doesn't exist and put:

    send host-name = pick-first-value(gethostname(), "ISC-dhclient");

inside and restart NetworkManager or simply reboot.

senden9

Member

Registered: 2014-07-29

Posts: 8

Re: Network-Manager update breaks hostname sending to DNS server [solved]

Thanks. This solved my problem. Have you reported this as bug?