Situation: I have 3 devices on an Ethernet network.
1) 172.30.40.100 (Ubuntu 14.04) 2) 172.30.41.101 (other) 3) 192.168.30.102 (other)
I would like to setup 1) to be able to send msgs to both of the devices. I can hear each of the devices emitting UDP traffic (ngrep/tcpdump/Wireshark). There is a UDP protocol msg which will tell 2)/3) to change its IP, allowing a proper network setup where all three devices are on the same network.
Background: 2)/3) are devices that may reboot and when they do, they come up on a different network(192) than what I currently have set. There are other devices on the network that can only hear UDP msgs on the current network so getting the 2)/3) onto the proper network is important.
Currently, I have a program running on 1) that will change its IP address to 192 and send the msg to 3) to change to 172, and then change its own IP back to 172. I am hoping there is some other way to be able to send UDP msgs to each device WITHOUT changing 1)'s IP address.
Is this possible?