YUN Servo bridge

Hello. I would like to ask about combination of arduino yun and xbee shield.

Problem:

While using xbee shield pro with YUN, I can see that attached servo is having a shocks while sending to other xbee a message.

Xbee shield is attached : from YUN PINs: 8,9 (TX,RX) to xbee shield PINs 0,1.
Servo is attached to (10,11,12 ).

While sending xBeeSerial.print( " ..." ) servo also responds for this message.
The result is that, the servo is shaking while using xbee with YUN.

I have also used SoftwareSerial to create a serial for xbee.

Please for any help I have no idea how to avoid shocks. :roll_eyes: