grp_4     Link encap:Ethernet  HWaddr 66:cd:4e:dc:88:2c  
          inet6 addr: fe80::64cd:4eff:fedc:882c/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:8 errors:0 dropped:0 overruns:0 frame:0
          TX packets:110 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:816 (816.0 B)  TX bytes:5580 (5.5 KB)