Pinging in WiFi

Other Hardware Home Automation
1

Hi,

I'm trying to send UDP datagrams between two ESP8266 - ESP-1 modules.
The modules are connected to WiFi, the connection does happen. Also in my
network I've got devices connected by ethernet via a hub.

Sending an UDP message to the modules from my PC ("Packet Sender") works perfectly.
Sending a message to the PC also works. Alas, sending them to each other does not work.
After meddling with my code for the now already past weekend I had run out of ideas.
So I tried to PING the modules and PING will reach them from the PC. The PC on the other
hand will be reached by the modules also.
But PINGing the modules from each other won't work: I'm guessing network problems.
So I tried to enter the complete setup for the network
into my code:
WiFi.config(local_ip, DNS_ip, gateway_ip, subnet_ip);
before "WiFi.begin" but that doesn't change anything. What am I missing?

Thanks for any help...
Christoph

2

This is soooo embarassing ...

Tried it again, as I had written with the IP addresses for the WiFi network and
it seems I got mixed up with the addresses as dealt from the router and as
configured manually previously... anyway, seems to work now.

Nevermind. :-[

Christoph