google translate
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Noted the following bug in the SNMP trap.
We have the nodes in the dns is ip-address. In this case, the processing script ladders zabbix_trap_receiver.pl, ladder comes twice.
Ie it is first compared with the ip and recorded in the history of the site, and then checks the dns and once again added to the story.
If the fields are different ip and dns, then everything works correctly.

original
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??????? ????????? ??? ? ?????? SNMP trap.
? ??? ??? ????? ? ???? dns ????? ip-?????. ? ???? ??????? ??? ????????? ?????? ???????? zabbix_trap_receiver.pl, ???? ???????? ??? ????.
?.?. ?? ??????? ???????????? ? ip ? ???????????? ? ??????? ????, ? ????? ????????? ? dns ? ??? ??? ??????????? ? ???????.
???? ???? dns ? ip ??????, ?? ??? ???????? ?????????.