ethernet shield change ip address while running

hello there,

i'm new forum, i'm not quite sure best category topic fits into, i'll try anyways.

here's scenario: start arduino pre-configured ip , mac address, start server client connects, , sends new ip/mac address. now, arduino change it's ip address, , start operating.

what i've done far: tied digital pin reset pin on ethernet shield can reset ethernet shield sketch. receive bytes, process them, reset ethernet shield , second ethernet.begin();

after sending arduino new configuration, can see respond restart, after restart, ethernet connection stops working absolutely. doesn't respond ping on old address, ping not unreachable, case when trying second address.

i don't know do, , i've been googling , trying few days now, , it's getting pretty annoying.

thanks in advance!

how change ip address on ethernet shield , make arduino implement ?  surely can done inside sketch ?

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