how to reset DNS settings to the defaults?

while I'm learning the DNS, I have installed too many apps such as BIND and DNSmasq and made some changes to /etc/resolve.conf

and now I would like to reset the DNS settings to defaults? I have removed DNSmasq and the things I remember but is there's someway to reset the DNS settings to defaults rather than reinstall the system?

asked Jan 3 at 17:56

Adam

1013

What *buntu version are you using? Are you using systemd-resolved or not?

– Gannet
Jan 3 at 23:40

In tags you see ubuntu 18.04 is tagged, yes I have systemd-resolved enabled and running

– Adam
Jan 4 at 0:22

add a comment |

while I'm learning the DNS, I have installed too many apps such as BIND and DNSmasq and made some changes to /etc/resolve.conf

asked Jan 3 at 17:56

Adam

1013

What *buntu version are you using? Are you using systemd-resolved or not?

– Gannet
Jan 3 at 23:40

In tags you see ubuntu 18.04 is tagged, yes I have systemd-resolved enabled and running

– Adam
Jan 4 at 0:22

add a comment |

while I'm learning the DNS, I have installed too many apps such as BIND and DNSmasq and made some changes to /etc/resolve.conf

asked Jan 3 at 17:56

Adam

1013

while I'm learning the DNS, I have installed too many apps such as BIND and DNSmasq and made some changes to /etc/resolve.conf

networking 18.04 dns

asked Jan 3 at 17:56

Adam

1013

asked Jan 3 at 17:56

Adam

1013

asked Jan 3 at 17:56

Adam

1013

asked Jan 3 at 17:56

Adam

1013

asked Jan 3 at 17:56

Adam

1013

What *buntu version are you using? Are you using systemd-resolved or not?

– Gannet
Jan 3 at 23:40

In tags you see ubuntu 18.04 is tagged, yes I have systemd-resolved enabled and running

– Adam
Jan 4 at 0:22

add a comment |

What *buntu version are you using? Are you using systemd-resolved or not?

– Gannet
Jan 3 at 23:40

In tags you see ubuntu 18.04 is tagged, yes I have systemd-resolved enabled and running

– Adam
Jan 4 at 0:22

What *buntu version are you using? Are you using systemd-resolved or not?

– Gannet
Jan 3 at 23:40

In tags you see ubuntu 18.04 is tagged, yes I have systemd-resolved enabled and running

– Adam
Jan 4 at 0:22

add a comment |

1 Answer
1

active

oldest

votes

First, your /etc/systemd/resolved.conf should look like:

#  This file is part of systemd.

#

#  systemd is free software; you can redistribute it and/or modify it

#  under the terms of the GNU Lesser General Public License as published by

#  the Free Software Foundation; either version 2.1 of the License, or

#  (at your option) any later version.

#

# Entries in this file show the compile time defaults.

# You can change settings by editing this file.

# Defaults can be restored by simply deleting this file.

#

# See resolved.conf(5) for details



[Resolve]

#DNS=

#FallbackDNS=

#Domains=

#LLMNR=no

#MulticastDNS=no

#DNSSEC=no

#DNSOverTLS=no

#Cache=yes

#DNSStubListener=yes

Then run: sudo rm /etc/resolv.conf && sudo ln -s /run/systemd/resolve/stub-resolv.conf /etc/resolv.conf

And check your systemd-resolved is enabled with: systemctl status systemd-resolved.service and if not then enable it: systemctl enable systemd-resolved.service and start: systemctl start systemd-resolved.service

Seems, that's all.

edited Jan 4 at 0:43

answered Jan 4 at 0:29

Gannet

977

add a comment |

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1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

First, your /etc/systemd/resolved.conf should look like:

#  This file is part of systemd.

#

#  systemd is free software; you can redistribute it and/or modify it

#  under the terms of the GNU Lesser General Public License as published by

#  the Free Software Foundation; either version 2.1 of the License, or

#  (at your option) any later version.

#

# Entries in this file show the compile time defaults.

# You can change settings by editing this file.

# Defaults can be restored by simply deleting this file.

#

# See resolved.conf(5) for details



[Resolve]

#DNS=

#FallbackDNS=

#Domains=

#LLMNR=no

#MulticastDNS=no

#DNSSEC=no

#DNSOverTLS=no

#Cache=yes

#DNSStubListener=yes

Then run: sudo rm /etc/resolv.conf && sudo ln -s /run/systemd/resolve/stub-resolv.conf /etc/resolv.conf

Seems, that's all.

edited Jan 4 at 0:43

answered Jan 4 at 0:29

Gannet

977

add a comment |

First, your /etc/systemd/resolved.conf should look like:

#  This file is part of systemd.

#

#  systemd is free software; you can redistribute it and/or modify it

#  under the terms of the GNU Lesser General Public License as published by

#  the Free Software Foundation; either version 2.1 of the License, or

#  (at your option) any later version.

#

# Entries in this file show the compile time defaults.

# You can change settings by editing this file.

# Defaults can be restored by simply deleting this file.

#

# See resolved.conf(5) for details



[Resolve]

#DNS=

#FallbackDNS=

#Domains=

#LLMNR=no

#MulticastDNS=no

#DNSSEC=no

#DNSOverTLS=no

#Cache=yes

#DNSStubListener=yes

Then run: sudo rm /etc/resolv.conf && sudo ln -s /run/systemd/resolve/stub-resolv.conf /etc/resolv.conf

Seems, that's all.

edited Jan 4 at 0:43

answered Jan 4 at 0:29

Gannet

977

add a comment |

First, your /etc/systemd/resolved.conf should look like:

#  This file is part of systemd.

#

#  systemd is free software; you can redistribute it and/or modify it

#  under the terms of the GNU Lesser General Public License as published by

#  the Free Software Foundation; either version 2.1 of the License, or

#  (at your option) any later version.

#

# Entries in this file show the compile time defaults.

# You can change settings by editing this file.

# Defaults can be restored by simply deleting this file.

#

# See resolved.conf(5) for details



[Resolve]

#DNS=

#FallbackDNS=

#Domains=

#LLMNR=no

#MulticastDNS=no

#DNSSEC=no

#DNSOverTLS=no

#Cache=yes

#DNSStubListener=yes

Then run: sudo rm /etc/resolv.conf && sudo ln -s /run/systemd/resolve/stub-resolv.conf /etc/resolv.conf

Seems, that's all.

edited Jan 4 at 0:43

answered Jan 4 at 0:29

Gannet

977

First, your /etc/systemd/resolved.conf should look like:

#  This file is part of systemd.

#

#  systemd is free software; you can redistribute it and/or modify it

#  under the terms of the GNU Lesser General Public License as published by

#  the Free Software Foundation; either version 2.1 of the License, or

#  (at your option) any later version.

#

# Entries in this file show the compile time defaults.

# You can change settings by editing this file.

# Defaults can be restored by simply deleting this file.

#

# See resolved.conf(5) for details



[Resolve]

#DNS=

#FallbackDNS=

#Domains=

#LLMNR=no

#MulticastDNS=no

#DNSSEC=no

#DNSOverTLS=no

#Cache=yes

#DNSStubListener=yes

Then run: sudo rm /etc/resolv.conf && sudo ln -s /run/systemd/resolve/stub-resolv.conf /etc/resolv.conf

Seems, that's all.

edited Jan 4 at 0:43

answered Jan 4 at 0:29

Gannet

977

edited Jan 4 at 0:43

answered Jan 4 at 0:29

Gannet

977

answered Jan 4 at 0:29

Gannet

977

answered Jan 4 at 0:29

Gannet

977

add a comment |

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