Stop DHCP from changing resolv.conf
Problem
When my Linux DHCP client gets a lease, it over-writes the /etc/resolv.conf (which I don't want for highly-specific reasons I won't share here).Solution, Red Hat Family
In /etc/sysconfig/network-scripts/ifcfg-eth?, add:PEERDNS=no
Solution, brute force method
Mark resolv.conf as immutable:# chattr +i /etc/resolv.conf
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