dhcp at system boot on a bridged connection takes over a minute

[Sam Varshavchik]

[root@monster ~]# systemd-analyze blame
    1min 20.456s network.service
…
> From watching boot messages, it appears that DHCP takes over a minute. It

doesn't fail, eventually it acquires the assigned IP address, and the server  
finishes booting normally.

This started happening after I bridged eth0 in order to assign LAN IP  
addresses to VMs on the server.

Interestingly enough, doing ifdown vnet0/ifup vnet0 after booting does not  
experience the same delay. ifup vnet0 acquires IP from DHCP in a few seconds.