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cpburnz/Ubuntu_18.04_Networking.markdown

Last active January 29, 2019 17:38
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Ubuntu 18.04 Networking
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Ubuntu_18.04_Networking.markdown

Fix systemd's broken DNS resolution

Systemd by default breaks DNS name resolution by overriding /etc/resolv.conf to use its useless stub DNS server, and not the network managed one.

Symlink /run/systemd/resolve/resolv.conf to /etc/resolv.conf:

sudo ln -sf /run/systemd/resolve/resolv.conf /etc/resolv.conf

Sources:

Setup Windows NetBIOS name resolution

  1. Install libnss-winbind:

     sudo apt-get install libnss-winbind

  2. Enable NetBIOS name resolition by editing /etc/nsswitch.conf and changing the following line

     hosts:          files mdns4_minimal [NOTFOUND=return] dns mdns4

    and adding "wins" to the list after "dns":

     hosts:          files mdns4_minimal [NOTFOUND=return] dns wins mdns4

    If you don't care about mDNS resolution (automatic network host name resolution for *.local similar to NetBIOS), then "mdns4_minimal [NOTFOUND=return]" and "mdns4" can be removed:

     hosts:          files dns wins

Source: How to enable Linux machines to resolve Windows hostnames

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