Primarily because systemd DHCP cannot handle DHCP-Options (not options, but Options). The ones that Juniper JunOS DHCP server requires for Verizon FiOS.
So, here begins the long saga of a blog (that I might break up in several blogs)...
First thing, first.
Analysis of systemd dependencies.
I executed:As one can see that most people don't have dhclient@eth0.service systemd unit file.
systemd-analyze dot --order nginx.service network-pre.target network-online.target network.target system-dhclient.slice sys-subsystem-net-devices-eth1.device networking.service nss-lookup.target shorewall.service bind9.service dhclient@eth1.service ddclient.service resolvconf.service system-dhclient.slice > /tmp/custom.gv
dot -Tsvg < /tmp/custom.gv > /tmp/custom.svg
firefox /tmp/custom.svg
We are going to create a .gv file and convert it to SVG as shown below:
ISC DHCP CLient
And I finally got my very own Linux gateway to be hooked up to the Verizon HFC network, instead of using ActionTek wireless broadband router.
Details in here: https://github.com/egberts/systemd-dhclient
