Computer becomes invisible in my network

Hi, mysteriously my mac book becomes invisible in my network and nobody can see it however I can see all other computers in my network.
This problem can be temporarily corrected using AppleJack, but after a while or a day or some days the issue appears again.
Thanks for any given tip.
Diego

Is it's IP changing?
Might try this weird fix from long ago...
Try disabling Auto Login, and reboot.

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    Hi, mysteriously my mac book becomes invisible in my network and nobody can see it although I can see any other computer in my network.
    This problem can be temporarily corrected using AppleJack, but after a while or a day or some days the issue comes back.
    Thanks for any given tip.
    Diego

    Is it's IP changing?
    Might try this weird fix from long ago...
    Try disabling Auto Login, and reboot.

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     TCP    0.0.0.0:808            0.0.0.0:0              LISTENING       2260
     TCP    172.17.2.123:444       172.16.2.127:8050      ESTABLISHED     4
     TCP    172.17.2.123:444       172.16.2.127:8069      ESTABLISHED     4
     TCP    172.17.2.123:444       172.17.2.127:8053      ESTABLISHED     4
     TCP    172.17.2.123:10952     172.16.2.68:80         ESTABLISHED     3296
     TCP    172.17.2.123:11185     172.16.2.90:8080       SYN_SENT        468
     TCP    172.17.2.123:11190     172.16.2.90:8080       SYN_SENT        15268
     TCP    172.17.2.123:11330     172.16.2.90:8080       SYN_SENT        1296
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     TCP    [::]:808               [::]:0                 LISTENING      
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     TCP    [::1]:6001             [::1]:8029             ESTABLISHED     4764
     TCP    [::1]:6001             [::1]:8030             ESTABLISHED     4764
     TCP    [::1]:6001             [::1]:8031             ESTABLISHED     4764
     TCP    [::1]:6001             [::1]:8032             ESTABLISHED     4764
     TCP    [::1]:6001             [::1]:8033             ESTABLISHED     4764
     TCP    [::1]:6001             [::1]:8034             ESTABLISHED     4764
     TCP    [::1]:6001             [::1]:8035             ESTABLISHED     4764
     TCP    [::1]:6001             [::1]:8036             ESTABLISHED     4764
     TCP    [::1]:6001             [::1]:8037             ESTABLISHED     4764
     TCP    [::1]:6001             [::1]:8040             ESTABLISHED     4764
     TCP    [::1]:6001             [::1]:8041             ESTABLISHED     4764
     TCP    [::1]:6001             [::1]:8048             ESTABLISHED     4764
     TCP    [::1]:6001             [::1]:8049             ESTABLISHED     4764
     TCP    [::1]:6001             [::1]:8059             ESTABLISHED     4764
     TCP    [::1]:6001             [::1]:8060             ESTABLISHED     4764
     TCP    [::1]:8028             [::1]:6001             ESTABLISHED     9980
     TCP    [::1]:8029             [::1]:6001             ESTABLISHED     9980
     TCP    [::1]:8030             [::1]:6001             ESTABLISHED     9980
     TCP    [::1]:8031             [::1]:6001             ESTABLISHED     9980
     TCP    [::1]:8032             [::1]:6001             ESTABLISHED     9980
     TCP    [::1]:8033             [::1]:6001             ESTABLISHED     9980
     TCP    [::1]:8034             [::1]:6001             ESTABLISHED     9980
     TCP    [::1]:8035             [::1]:6001             ESTABLISHED     9980
     TCP    [::1]:8036             [::1]:6001             ESTABLISHED     9980
     TCP    [::1]:8037             [::1]:6001             ESTABLISHED     9980
     TCP    [::1]:8040             [::1]:6001             ESTABLISHED     9980
     TCP    [::1]:8041             [::1]:6001             ESTABLISHED     9980
     TCP    [::1]:8048             [::1]:6001             ESTABLISHED     9980
     TCP    [::1]:8049             [::1]:6001             ESTABLISHED     9980
     TCP    [::1]:8059             [::1]:6001             ESTABLISHED     9980
     TCP    [::1]:8060             [::1]:6001             ESTABLISHED     9980
     TCP    [fe80::9054:e8f5:f885:8105%20]:808  [fe80::9054:e8f5:f885:8105%20]:9901
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     TCP    [fe80::9054:e8f5:f885:8105%20]:9901  [fe80::9054:e8f5:f885:8105%20]:808
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    1296 -- svchost.exe -- Host Process for Windows Service
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