Resolving DDNS Updates Failure After DHCP Migration from NetWare to OES

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After migrating to OES DHCP server, you must delete the forward (A) and its PTR records which are created by NetWare DHCP server before a DDNS update is done. The following script deletes the forward (A) and its corresponding PTR records by reading the migrated DHCP lease db file.



Script Syntax:


./dhcp_oes.sh -l <lease_file>  -s <dns_server> 


Note: Using the -l option, you must specify the lease file of the DHCP server that is migrated to Linux



The example of command line execution of the script is:


./dhcp_oes.sh -l ./dhcpd.leases -s 164.99.100.134


Prerequisites:


Before executing this script, you must ensure that the following prerequisites are met:



a) requires Migrated DHCP lease DB file

b) In DNS server side, "allow-update any" should be enabled in forward & reverse zones.


  1. Login to DNS/DHCP  management console

  • Select forward/reverse zone > control tab

  • Select "allow-update any" option

  • restart rcnovell-named service.




Important: After executing this script, you must delete empty objects from the eDirectory. To do this, you must execute the following command:



dns-maint -d <LDAP host name> <LDAP port number> <Admin DN> <Secure LDAP or Not (0 -> non-SSL, 1->SSL)> <Read from Locator (0->No, 1->Yes)> <Locator FDN> 


Example execution of the command is:


dns-maint -d 164.99.100.101 636 cn=admin,o=novell 1 1 cn=DNS-DHCP,ou=DNSDHCP,o=novell

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