Data about kernel tuning will be collected here.
To allow receive of multicast packets it is necessary to set route rules for multicast:
# route add -net 18.104.22.168 netmask 240.0.0.0 dev eth0
To avoid packet lossing it is necessary to increase a size of socket receive buffer to 1500000 bytes (tested with ElphelOgm on Intel(R) Pentium(R) 4 CPU 3.20GHz with 100Mbit ethernet card and multicast flow from the camera about 6MB/s).
# echo 1500000 > /proc/sys/net/core/rmem_max # echo 1500000 > /proc/sys/net/core/rmem_default
Linux Tuning Guide (for 2.4 kernels)