https://blog.cloudflare.com/memcrashed-major-amplification-attacks-from-port-11211/
LISTEN="127.0.0.1:11211"
# other options not defined earlier
LISTEN="127.0.0.1:11211"
# other options not defined earlier
+
+# -U 0 to disable UDP listen:
+# https://blog.cloudflare.com/memcrashed-major-amplification-attacks-from-port-11211/
+MEMCACHED_OPTS="-U 0"
# Set ulimit at least as high as MAXCONN
#SERVICE_LIMITS="-n $MAXCONN"
# Set ulimit at least as high as MAXCONN
#SERVICE_LIMITS="-n $MAXCONN"