smcroute.conf
mgroup from eth1 group 224.7.7.7
mroute from eth1 group 224.7.7.7 source 10.1.3.2 to eth1

adding group ip
smcroute -j eth1 224.7.7.7

start daemon
smcroute -d

ip -s maddr
1:      lo
        inet  224.0.0.1
        inet6 ff02::1
3:      eth1
        link  33:33:ff:28:01:e1
        link  33:33:00:00:00:01
        link  01:00:5e:00:00:01
        inet  224.0.0.1 users 2
        inet6 ff02::1:ff28:1e1
        inet6 ff02::1
5:      eth3
        link  33:33:ff:28:01:e5
        link  33:33:00:00:00:01
        link  01:00:5e:00:00:01
        inet  224.0.0.1
        inet6 ff02::1:ff28:1e5
        inet6 ff02::1

route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
203.***.***.***   0.0.0.0         255.255.255.*** U     0      0        0 eth3
10.1.3.0        0.0.0.0         255.255.255.0   U     0      0        0 eth1
10.0.0.0        10.1.3.3        255.0.0.0       UG    0      0        0 eth1
224.0.0.0       0.0.0.0         224.0.0.0       U     0      0        0 eth1
0.0.0.0         203.***.***.*** 0.0.0.0         UG    0      0        0 eth3

ping 224.7.7.7 from node0
64 bytes from 10.1.3.2: icmp_seq=1 ttl=64 time=0.015 ms
64 bytes from 10.1.3.3: icmp_seq=1 ttl=64 time=1.85 ms (DUP!)
64 bytes from 10.1.3.2: icmp_seq=2 ttl=64 time=0.012 ms
64 bytes from 10.1.3.3: icmp_seq=2 ttl=64 time=0.226 ms (DUP!)