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< def makeDualRoot(testSystem, driveSystem):
---
> def makeDualRoot(testSystem, driveSystem, dumpfile):
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<
< self.etherdump = EtherDump(file='ethertrace')
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< int2 = Parent.drivesys.tsunami.etherint[0],
< dump = Parent.etherdump)
---
> int2 = Parent.drivesys.tsunami.etherint[0])
> if dumpfile:
> self.etherdump = EtherDump(file=dumpfile)
> self.etherlink.dump = Parent.etherdump
>