Ganglia: gmond "Error creating multicast server"

Computers without IPv4 default gateway will likely force gmond (Ganglia monitor daemon) to spew something like this upon start.
Error creating multicast server mcast_join=239.2.11.71 port=8649 mcast_if=NULL family='inet4'. 
Exiting.

bubby (here) suggested to add static route to fix this problem, worked like a charm.
# route add -host 239.2.11.71 dev eth0

The guys at UCSF suggested the similar approach, though to quite-unrelated problem on multihomed computers here and here.