Good morning @RamSet, thanks for your opinion.
it was a.root-servers.net , sorry for typo. Agree it was looking for some stuff, I set the DNS statically but it still was trying to contact for whatever reason. May it's checking for outside world connectivity every 30 sec? I'm not using any DDNS services either. Yes the requests were not alarming but it seems only tp-link router doing this as my other non tp-link routers are quiet. Personally I feel better with a quiet router but that's everyone's own decision. Next target my tvbox( [api.ibm.xtify.com]
cheers and have a nice day
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