mikrotik is invisible in nagios ( no icmp echo)

Hello, I've got a small (20 APs running on Mikrotik routerOS 2.9 on 5.4Ghz) network . I'm monitoring it with nagios.. My problem is that when i try to ping mikrotik machines by normal ping

- they does not respond to it.. when i ping it with arping - it responds and then for a few minutes i can ping them with icmp ping... after few minutes (even seconds ) it stops responding to icmp... what is the problem?

(theese MTiks are configured to bridge wlan with ethernet and the IP address that I ping is ethernet ) configured like this :

[admin@MTD] > ip address print Flags: X - disabled, I - invalid, D - dynamic # ADDRESS NETWORK BROADCAST INTERFACE 0 10.100.3.100/24 10.100.3.0 10.100.3.255 ether1

I ping it from 10.100.0.1 that has an ip alias too for Mikrotik's net ( that is 10.100.3.1)..

please help ;) regards WZ

Reply to
wojciech.ziniewicz
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