Issue with resolving ip adress of a deployed platform

Hi, for some reason my GR node cannot communicate with a platform after I restarted it (platform name SCADA-SMS) . The log on the platform in question says. 

1. ResolveIPAddr couldn't resolve IP SCADA-SMS. It has a valid format, but cannot be resolved.

2. Address SCADA-SMS was resolved to 169.254.156.200 

3. bind() to address 169.254.156.200 failed with error 10049

the correct ip is 10.4.20.206 so the adress on the platform is not correct.

any ideas?