I'm using AT+CIPSTART to establish a TCP link and my error trapping picked up quite a few fails and on expanding my debugging I discovered I seemed to be getting quite a few DNS fails for no apparent reason (can typically take 10-15 seconds or so for this error to be reported).
As a workaround I tried the IP address instead of the domain name but this immediately returns with an IP ERROR message. Although I was already on fairly current firmware I upgraded to AT Bin V1.6.1 but the symptoms are identical as the slightly earlier firmware.
The problem is reproducible on several different Arduinos including those with an ESP-01 and those with a Wemos Arduino Mega with integral 8266 flashed with the above firmware.#
Any ideas on both the DNS issue and the fact that substituting the server name with a pre-resolved IP fails immediately with an IP ERROR message?
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