proc configPacketHeaderField {stackObj args} {
    # Example:
    #ixNet setMultiAttribute $configElementObj/stack:\"mpls-2\"/field:\"mpls.label.value-1\" \
    #	-valueType increment \
    #	-startValue 1001 \
    #	-stepValue 1 \
    #	-countValue 1

    puts "\nconfigPacketHeaderField: $stackObj\n\t$args"
    eval ixNet setMultiAttribute $stackObj $args
    ixNet commit
}