Network service discovery disabled

[Siliconserf]

OK, I mastered updating the eMMC with 16.04, but the message referenced in the subject keeps coming up after booting. From what I've discovered this is because my ISP is doing something considered lazy, or at least mildly improper with access to DNS. In any even in my searching I found instructions on editing a workaround in a file in

Code:

/etc/network/if-up.d/avahi-daemon

to include a line but even though I'm logged in as a user with administrator privilege, the editor won't save, complaining that I don't have the necessary privilege. Is it necessary to invoke a particular program from a command line?

[MarkHaysHarris777]

...  even though I'm logged in as a user with administrator privilege, the editor won't save, complaining that I don't have the necessary privilege. Is it necessary to invoke a particular program from a command line?

Administrator privileges give you specific rights like the ability to use the sudo command, because your administrator id is in the sudoers file.  Try this :

sudo  vi  <path/filename>

or 

sudo  gedit   <path/filename>

or 

sudo  nano  <path/filename>

hint:  the sudo command gives you temporary root privileges  ::  it will prompt you for your password !