I usually use XML::XSH2 for XML manipulation. In this case, it can be used as follows: 
open Office.xml ;
my $new := insert element IP into //node[label="Office"]/node[label="1
+st Floor"] ;
set $new/text() '10.1.1.1' ;
save :b ;

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In reply to Re: libxml - insert node by choroba
in thread libxml - insert node by Styric

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