Network Manager in Fedora still ignores the old system wide /etc/dhclient.conf(it’s rude like that), so you would have to create a
to get it to work. The contents will still be the usual:
send host-name "my.little.pony";
request subnet-mask, broadcast-address, time-offset, routers,
domain-search, domain-name, domain-name-servers, host-name;
I don’t request much, but I do make demands. After you may safely right click you’re nm-applet icon and select your current connection, it will re-initialize(I may be phrasing this wrong) you current connection and you’re set!