My zpologies everyone for having youspendtime on what seems tohave been a totally self-inflicted problemonmypart. My earlier "moving around" invlvedtrying to findheapprpriatecommands to bring downthe bridge toits defaultstatein orderto performacleanrestart. Itturnsoutthat I failed to bringdown some tapinterfacesbefore deleing thebridge,which led to a defective bridge configuration being left running. Then I tried restarting pydecnet and that's when theproblems showed up. Thanks to Thomas, Johnny and David for putting me on the right track. Several of you askedfor how I configuredthe KLH10 networkinterfaces, and I remarked on that while hinting on my icompletetesting procedure.Ishould have taken down the bridgecompletely, andrestarted the KLH10 instances, which sould have resolved theproblem before asking the list: in a few days now. This is a sample net Asto that question however, the network configuration looksasfollows: devdef ni0 564 ni20 dedic=true ifc=tap2 ifmeth=tap+bridge ipaddr=192.168.9.72 dpdelay=3 then I havea local file in SYSTEM with the node number usedby 7-CONFIG.CMD which I believe makes KLH10 setthe correctethernet addresson itsinerface. $TYPE (FILE) NODE.IND.1 RARITY 1.802 I haveyet to chck a fewthings before can say forsurethatthe issueis resolved, butthankyou fior yourquestions and feedback, itwasvery helpful. /AndersAndersson