asm multicast ping 6.3 vs 7.1

[dikshie]

hi,
i have strange situation here.
in my 6.3 box:
-------------------------------------
$ asmping ff38:20:2001:d30:: soi-mirror.unibraw.ai3.net
asmping joined (S,G) = (*,ff38:20:2001:d30::4321:1234)
pinging 2001:d30:111:2::4 from 2001:d30:101:1::10
 unicast from 2001:d30:111:2::4, seq=1 dist=2 time=329.990 ms
multicast from 2001:d30:111:2::4, seq=1 dist=2 time=334.344 ms
 unicast from 2001:d30:111:2::4, seq=2 dist=2 time=340.283 ms
multicast from 2001:d30:111:2::4, seq=2 dist=2 time=341.357 ms
 unicast from 2001:d30:111:2::4, seq=3 dist=2 time=347.617 ms
multicast from 2001:d30:111:2::4, seq=3 dist=2 time=347.627 ms
^C
--- 2001:d30:111:2::4 statistics ---
3 packets transmitted, time 2726 ms
unicast:
  3 packets received, 0% packet loss
  rtt min/avg/max/std-dev = 329.990/339.296/347.617/7.261 ms
multicast:
  3 packets received, 0% packet loss since first mc packet (seq 1) recvd
  rtt min/avg/max/std-dev = 334.344/341.109/347.627/5.446 ms
--------------------------------------

in my 7.1 box:
--------------------------------------
$ asmping ff38:20:2001:d30:: soi-mirror.unibraw.ai3.net
Failed to join multicast group: Protocol not available
errno=42
--------------------------------------

both boxes has same ipv4 subnet and same ipv6 link.
7.1 box has options MROUTING
6.3 box does not has options MROUTING

do i miss something here?


best regards,


-- 
-dikshie-