resolv.conf questions

[Colin Law]

On Tue, 6 Aug 2019 at 13:32, Eliza <eli at chinabuckets.com> wrote:
>
> Hello,
>
> After installing ubuntu-18.04 I found there are the lines in
> /etc/resolv.conf:
>
> nameserver 127.0.0.53
> options edns0

Does the file start with these lines or something similar?
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
#     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
# 127.0.0.53 is the systemd-resolved stub resolver.
# run "systemd-resolve --status" to see details about the actual nameservers.

Colin