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Error dhcp.c(4228): non-null pointer DHCP Error: [ dhcp.c(4228): non-null pointer ] error in my message log This error is due to improper reverse dns configuration. I checked nslookup

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While connecting the Linux server through putty, following error occurred. SSHD server unexpectedly closed network connection Error log: tail -f /var/log/audit/audit.log type=USER_AUTH msg=audit(1292432614.589:14079): user pid=5965 uid=0 auid=0 ses=1