Web fronted shows that host is not accessible by zabbix agent, but is has no zabbix checks.
Moreover, now host has differrent IP , then below in error message:

mysql> select error from hosts where host="IGR-S111-P660RT2-1";
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1 row in set (0.00 sec)

and red Z status:

mysql> select available from hosts where host="IGR-S111-P660RT2-1";
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1 row in set (0.00 sec)

I guess this should be updated by server according to checks.