another nsupdate question

[Charles Bodley]

     The examples below show how nsupdate could be used to insert and delete
     resource records from the example.com zone.  Notice that the input in
     each example contains a trailing blank line so that a group of commands
     are sent as one dynamic update request to the master name server for
     example.com.

           # nsupdate
           > update delete oldhost.example.com A
           > update add newhost.example.com 86400 A 172.16.1.1
           >
Is there anyway to just update not remove then re-add? According to the man
page it's sent as one request does this mean that if it fails nothing
happens or can it fail in such away that there in no record left?

Charles A. Bodley
Technician
TF Logic

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