MongoDB 3.4 Server not starting with bind error following a CentOS 7.4 security update
@smile2day, It's pretty clear from your error log


  E NETWORK  [initandlisten] listen(): bind() failed Cannot assign
  requested address for socket: xxx.xxx.xxx.xxx:27017


There is MongoDB 3.4 Server startup problem resist through bind() of IP, not from your  CentOS update.

May be you have mistake of configuration of code. As i am able to see here in one straight line you are writing the bindIp with port number.

As MongoDB BOL documented 
Here should be separated in systemLog of mongod settings like such as

net:
   bindIp: 127.0.0.1
   port: 27017