No, this is dnsmasq:

    udp 0 0 0.0.0.0:67 0.0.0.0:* 5382/dnsmasq
                                 ^^^^^^^^^^^^

Please make sure you dnsmasq is correctly configured for your use case
(and probably, not configured at all if you want to use isc-dhcp)

** Changed in: isc-dhcp (Ubuntu)
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/1690933

Title:
  isc-dhcp-server/dhcpd listens on 0.0.0.0:67/UDP no matter which
  interfaces is specified

Status in isc-dhcp package in Ubuntu:
  Incomplete

Bug description:
  The behaviour of the `systemd` unit `isc-dhcp-server.service` is the
  same as on the command line: both `sudo dhcpd` and `sudo dhcpd p18p1`
  (where `p18p1` is the name of a network interfaces) cause the daemon
  to listen on all interfaces according to `sudo netstat -tupln | grep
  :67`:

      udp        0      0 0.0.0.0:67              0.0.0.0:*
  5382/dnsmasq

  The `isc-dhcp-server6.service` unit is deactivated.

  ProblemType: Bug
  DistroRelease: Ubuntu 17.04
  Package: isc-dhcp-server 4.3.5-3ubuntu1
  ProcVersionSignature: Ubuntu 4.10.0-20.22-generic 4.10.8
  Uname: Linux 4.10.0-20-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl zcommon znvpair
  ApportVersion: 2.20.4-0ubuntu4
  Architecture: amd64
  Date: Mon May 15 23:41:54 2017
  DhServerLeases:

  InstallationDate: Installed on 2015-04-20 (756 days ago)
  InstallationMedia: Ubuntu-Server 14.10 "Utopic Unicorn" - Release amd64 
(20141022.2)
  ProcEnviron:
   TERM=screen.xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  SourcePackage: isc-dhcp
  UpgradeStatus: Upgraded to zesty on 2017-05-05 (9 days ago)
  mtime.conffile..etc.dhcp.dhcpd.conf: 2017-05-15T23:37:21.502892

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