[arm-allstar] DNS resolv issue

[Tony Ross]

On 02/28/2018 01:22 PM, "Ray Congdon via arm-allstar" wrote:
> Ok, It seems, after speaking with of our local ISP techs, that they (The ISP) recently suffered an attack on their DNS profile system of some kind (Out of my league!) so they have locked down the DNS use to only a few specific ones... Thus my ploy of changing the resolv file to reflect either 8.8.8.8 or one of the DNS servers listed in my router (from the ISP) works.. sorta.  Open to any and all better solutions.
> Thanks, KL7UT

Use https://use.opendns.com/ since Google will occasionally err 
depending on several factors:*

*# cat /etc/resolv.conf
nameserver 208.67.222.222
nameserver 208.67.220.220

After editing resolv.conf then change the attribute to make it immutable 
so it doesn't get overwritten by the router if using dhcp:

# chattr +i  /etc/resolv.conf

... and verify:

# lsattr /etc/resolv.conf
----i---------e---- /etc/resolv.conf