We should check for interface netmask and not use the hardcoded value of 255.255.255.0

[patrickelectric]

ping-viewer/src/network/networkmanager.cpp

Line 95 in 863f9be

const bool sameSubnet = (address.toIPv4Address() & 0xffffff00) == (testAddress.toIPv4Address() & 0xffffff00);