External multicast data is being received by machine #1 and forwarded to machine #2. On machine #2 I can see the multicast packets being received when I use
netstat -i (ethernet layer).
However, when I run
netstat -s -u the number of UDP packets isn’t increasing, nor is
InOctets is increasing. So my guess is packets are being dropped in the IP or UDP/TCP layer?
How can I confirm this and what would be the most-likely cause of the packet-loss?