ubuntu server 18.04 boot slow more 2 minute

After install ubuntu server 18.04 and found boot more 2 minute and have a error "a start job is running for wait for network to be configured"

How to fix this error check network interface
sudo networkctl
IDX LINK             TYPE               OPERATIONAL SETUP   
  1 lo               loopback           carrier     unmanaged
  2 enp4s5           ether              routable    configured
  3 enp5s0           ether              no-carrier  configuring

sudo networkctl status enp4s5

1. sudo vim /run/systemd/generator/network-online.target.wants/systemd-networkd-wait-online.service

change this line
ExecStart=/lib/systemd/systemd-networkd-wait-online
to
ExecStart=/lib/systemd/systemd-networkd-wait-online --interface=enp4s5 --quiet

------------------edit-----------------------------------

[Service]
Type=oneshot
ExecStart=/lib/systemd/systemd-networkd-wait-online --interface=enp4s5 --quiet
RemainAfterExit=yes
Ô

------------------end------------------------------------

2. reboot

Ref: a-start-job-is-running-for-wait-for-network-to-be-configured-ubuntu-server-17-1