Two attributes should have same reference point/Two elements should have same reference point under the same root elment

Hi,

Please let me know the case, i am giving the example here,
 EX:
 <staticroutes>
       <ip ip="route1">
         <via>192.168.55.1</via>
 	  <via>192.168.55.1</via>
         <mtu>5000</mtu>
         <metric>5</metric>
       </ip>
 </staticroutes>
 
 In the above example two elments having the same name and 
 both contains the same value.If the user change the value of 
 one element via second element via should be changed with same value.
 EX:
 <staticroutes>
       <ip ip="route1">
         <via>192.168.55.2</via>
 	  <via>192.168.55.2</via>
         <mtu>5000</mtu>
         <metric>5</metric>
       </ip>
 </staticroutes>
 Both should point the same value.
 
 Please let me know the schema design for that.
 
 Thanks,
 M.Saisuman.


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