truncated incorrect double (nodejs)

I am getting

truncated incorrect double value error

when running

var post = {ip:'10.90.0.203'};
con.query("UPDATE ipaddress SET flag = 1,status = 'up' WHERE ip = ?",post);

this is my table structure

create table ipaddress(
ip varchar(15) unique not null,
flag smallint default 0,
status varchar(5) default 'down');