Netstat -g where the group IP is defined

Hi when I run netstat -g I see the following table. However, I just don't know which IP address all-system.mcast.net is mapped to? Where is it defined? Is there a file in linux to configure it? Thanking you in advance

IPv6/IPv4 Group Memberships

Interface       RefCnt Group
--------------- ------ ---------------------
lo              1      all-systems.mcast.net
eth2            1      all-systems.mcast.net
eth3            1      239.1.1.6
eth3            1      239.1.1.3
eth3            1      239.1.1.10
eth3            1      239.1.1.14
eth3            1      all-systems.mcast.net

      

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"all-systems.mcast.net" and similar addresses are reserved for IP multicast and are registered with the IANA. They cannot be changed.

In your case all-systems.mcast.net is 224.0.0.1.



You can find these assignments http://www.iana.org/assignments/multicast-addresses/multicast-addresses.xhtml

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If you only want to see IP addresses in this output, not names, run netstat -ng

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