Bug 524686

Summary:	net-misc/dhcp: add support for interface specific systemd service files
Product:	Gentoo Linux	Reporter:	alexander haensch <alexander.haensch>
Component:	[OLD] Core system	Assignee:	Gentoo's Team for Core System packages <base-system>
Status:	UNCONFIRMED ---
Severity:	normal	CC:	arthur
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---

Description alexander haensch 2014-10-07 10:55:44 UTC

the systemd service files delivered with the package work fine, but start the DHCP server on all available interfaces. 
This is practical in many cases, but in some situations you want the DHCP server just listen on a specific interface.

I propose to add two additional service files that allow interface specific startup.

Reproducible: Always

Comment 1 alexander haensch 2014-10-07 10:57:15 UTC

on example for the dhcpv4@.service file could be:

[Unit]
Description=DHCPv4 Server Daemon on interface %I
Documentation=man:dhcpd(8) man:dhcpd.conf(5)
After=network.target
After=time-sync.target

[Service]
ExecStart=/usr/sbin/dhcpd -f -cf /etc/dhcp/dhcpd.conf -user dhcp -group dhcp --no-pid %i

[Install]
WantedBy=multi-user.target


so the %i is appling the interface that is needed.

Comment 2 Chris Paras 2018-05-31 14:54:13 UTC

This will work fine when you specify just one interface for dhcpd to listen on, but i think it won't work for multiple interfaces.

Suggestion:


/etc/systemd/system/dhcpd[4,6]/service.d/00gentoo.conf

[Service]
Environment="DHCPD_IFACES=eth0 br0"

and in /etc/systemd/system/dhcpd4.service

[Service]
ExecStart=/usr/sbin/dhcpd -f -cf /etc/dhcp/dhcpd.conf -user dhcp -group dhcp --no-pid $DHCPD_IFACES

Basically its working like the /etc/conf.d/ files used to do for openrc.