Public bug reported:
1) on a »Ubuntu 16.04.4 LTS« with static ip configuration in
/etc/network/interfaces and manual entries in /etc/resolv.conf
2) network-manager 1.2.6-0ubuntu0.16.04.2 is enabled but doesn’t manage any
interfaces and therefore doesn’t start dnsmasq
3) using hostnamectl and updating /etc/hosts doesn’t break dns
resolution
4) changing the hostname however triggers NetworkManager to start
dnsmasq and overwrite /etc/resolv.conf
Workarounds are chattr’ing /etc/resolv.conf or – in this case –
disabling NetworkManager but i think this shouldn’t happen.
cat /etc/NetworkManager/NetworkManager.conf
[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq
[ifupdown]
managed=false
** Affects: network-manager (Ubuntu)
Importance: Undecided
Status: New
** Tags: xenial
** Package changed: dnsmasq (Ubuntu) => network-manager (Ubuntu)
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https://bugs.launchpad.net/bugs/1761986
Title:
hostname change with static ip overwrites (manual) resolv.conf
Status in network-manager package in Ubuntu:
New
Bug description:
1) on a »Ubuntu 16.04.4 LTS« with static ip configuration in
/etc/network/interfaces and manual entries in /etc/resolv.conf
2) network-manager 1.2.6-0ubuntu0.16.04.2 is enabled but doesn’t manage any
interfaces and therefore doesn’t start dnsmasq
3) using hostnamectl and updating /etc/hosts doesn’t break dns
resolution
4) changing the hostname however triggers NetworkManager to start
dnsmasq and overwrite /etc/resolv.conf
Workarounds are chattr’ing /etc/resolv.conf or – in this case –
disabling NetworkManager but i think this shouldn’t happen.
cat /etc/NetworkManager/NetworkManager.conf
[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq
[ifupdown]
managed=false
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1761986/+subscriptions
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