root@s1:~# cat /etc/dhcp/dhclient.conf
# Configuration file for /sbin/dhclient, which is included in Debian's
#   dhcp3-client package.
#
# This is a sample configuration file for dhclient. See dhclient.conf's
#   man page for more information about the syntax of this file
#   and a more comprehensive list of the parameters understood by
#   dhclient.
#
# Normally, if the DHCP server provides reasonable information and does
#   not leave anything out (like the domain name, for example), then
#   few changes must be made to this file, if any.
#

option rfc3442-classless-static-routes code 121 = array of unsigned integer 8;
option rack code 225 = text;
option cluster code 226 = text;

send host-name = gethostname();
request subnet-mask, broadcast-address, time-offset, routers,
    domain-name, domain-name-servers, domain-search, host-name,
    dhcp6.name-servers, dhcp6.domain-search,
    netbios-name-servers, netbios-scope, interface-mtu,
    rfc3442-classless-static-routes, ntp-servers,
    dhcp6.fqdn, dhcp6.sntp-servers, rack, cluster;

prepend domain-name-servers 127.0.0.1; # << this is the line you need in dhclient. may not be needed if resolvconf is installed, I havent tested yet...


root@s1:~# cat /etc/resolv.conf
# 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
nameserver 127.0.0.1
search tvoli

# Resolvconf ends up like this. use localhost as resolver. Resolvconf takes care of lots of stuff when it comes to dhcp.

root@s1:~# cat /etc/dnsmasq.d/10-consul
server=/consul/127.0.0.1#8600
root@s1:~#  # Overrides default server in dnsmasq to send *.consul to some server and port. (consul client/agent/server running on localhost)