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Mat
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ifconfig eth0

eth0 Link encap:Ethernet HWaddr 00:0C:29:F1:FF:EA
inet addr:78.46.74.27 Bcast:78.46.74.31 Mask:255.255.255.224 inet6 addr: fe80::20c:29ff:fef1:ffea/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:5339836 errors:0 dropped:0 overruns:0 frame:0 TX packets:5486444 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:820300389 (782.2 MiB) TX bytes:1929979381 (1.7 GiB) Base address:0x1400 Memory:e8820000-e8840000

# ifconfig eth0 eth0 Link encap:Ethernet HWaddr 00:0C:29:F1:FF:EA inet addr:78.46.74.27 Bcast:78.46.74.31 Mask:255.255.255.224 inet6 addr: fe80::20c:29ff:fef1:ffea/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:5339836 errors:0 dropped:0 overruns:0 frame:0 TX packets:5486444 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:820300389 (782.2 MiB) TX bytes:1929979381 (1.7 GiB) Base address:0x1400 Memory:e8820000-e8840000

Disable Multicast:

ifconfig eth0 -multicast

ifconfig eth0 -multicast

result  :

ifconfig eth0

eth0 Link encap:Ethernet HWaddr 00:0C:29:F1:FF:EA
inet addr:78.46.74.27 Bcast:78.46.74.31 Mask:255.255.255.224 inet6 addr: fe80::20c:29ff:fef1:ffea/64 Scope:Link UP BROADCAST MTU:1500 Metric:1 RX packets:5339836 errors:0 dropped:0 overruns:0 frame:0 TX packets:5486444 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:820300389 (782.2 MiB) TX bytes:1929979381 (1.7 GiB) Base address:0x1400 Memory:e8820000-e8840000

# ifconfig eth0 eth0 Link encap:Ethernet HWaddr 00:0C:29:F1:FF:EA inet addr:78.46.74.27 Bcast:78.46.74.31 Mask:255.255.255.224 inet6 addr: fe80::20c:29ff:fef1:ffea/64 Scope:Link UP BROADCAST MTU:1500 Metric:1 RX packets:5339836 errors:0 dropped:0 overruns:0 frame:0 TX packets:5486444 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:820300389 (782.2 MiB) TX bytes:1929979381 (1.7 GiB) Base address:0x1400 Memory:e8820000-e8840000

No Multicast present in the interface

Enable Multicast :

ifconfig eth0 multicast

ifconfig eth0 multicast

ifconfig eth0

eth0 Link encap:Ethernet HWaddr 00:0C:29:F1:FF:EA
inet addr:78.46.74.27 Bcast:78.46.74.31 Mask:255.255.255.224 inet6 addr: fe80::20c:29ff:fef1:ffea/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:5339836 errors:0 dropped:0 overruns:0 frame:0 TX packets:5486444 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:820300389 (782.2 MiB) TX bytes:1929979381 (1.7 GiB) Base address:0x1400 Memory:e8820000-e8840000

Disable Multicast:

ifconfig eth0 -multicast

result  :

ifconfig eth0

eth0 Link encap:Ethernet HWaddr 00:0C:29:F1:FF:EA
inet addr:78.46.74.27 Bcast:78.46.74.31 Mask:255.255.255.224 inet6 addr: fe80::20c:29ff:fef1:ffea/64 Scope:Link UP BROADCAST MTU:1500 Metric:1 RX packets:5339836 errors:0 dropped:0 overruns:0 frame:0 TX packets:5486444 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:820300389 (782.2 MiB) TX bytes:1929979381 (1.7 GiB) Base address:0x1400 Memory:e8820000-e8840000

No Multicast present in the interface

Enable Multicast :

ifconfig eth0 multicast

# ifconfig eth0 eth0 Link encap:Ethernet HWaddr 00:0C:29:F1:FF:EA inet addr:78.46.74.27 Bcast:78.46.74.31 Mask:255.255.255.224 inet6 addr: fe80::20c:29ff:fef1:ffea/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:5339836 errors:0 dropped:0 overruns:0 frame:0 TX packets:5486444 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:820300389 (782.2 MiB) TX bytes:1929979381 (1.7 GiB) Base address:0x1400 Memory:e8820000-e8840000

Disable Multicast:

ifconfig eth0 -multicast

result:

# ifconfig eth0 eth0 Link encap:Ethernet HWaddr 00:0C:29:F1:FF:EA inet addr:78.46.74.27 Bcast:78.46.74.31 Mask:255.255.255.224 inet6 addr: fe80::20c:29ff:fef1:ffea/64 Scope:Link UP BROADCAST MTU:1500 Metric:1 RX packets:5339836 errors:0 dropped:0 overruns:0 frame:0 TX packets:5486444 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:820300389 (782.2 MiB) TX bytes:1929979381 (1.7 GiB) Base address:0x1400 Memory:e8820000-e8840000

No Multicast present in the interface

Enable Multicast :

ifconfig eth0 multicast
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bill mate
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ifconfig eth0

eth0 Link encap:Ethernet HWaddr 00:0C:29:F1:FF:EA
inet addr:78.46.74.27 Bcast:78.46.74.31 Mask:255.255.255.224 inet6 addr: fe80::20c:29ff:fef1:ffea/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:5339836 errors:0 dropped:0 overruns:0 frame:0 TX packets:5486444 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:820300389 (782.2 MiB) TX bytes:1929979381 (1.7 GiB) Base address:0x1400 Memory:e8820000-e8840000

Disable Multicast:

ifconfig eth0 -multicast

result :

ifconfig eth0

eth0 Link encap:Ethernet HWaddr 00:0C:29:F1:FF:EA
inet addr:78.46.74.27 Bcast:78.46.74.31 Mask:255.255.255.224 inet6 addr: fe80::20c:29ff:fef1:ffea/64 Scope:Link UP BROADCAST MTU:1500 Metric:1 RX packets:5339836 errors:0 dropped:0 overruns:0 frame:0 TX packets:5486444 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:820300389 (782.2 MiB) TX bytes:1929979381 (1.7 GiB) Base address:0x1400 Memory:e8820000-e8840000

No Multicast present in the interface

Enable Multicast :

ifconfig eth0 multicast