Seweryn
New Around Here
Sometimes on RT-AC86U (Asuswrt Merlin), even if there was no signal interruption, devices on LAN become unreachable for each other.
I have one wired device and around 25 wireless devices – all with static IPs and additional hostname entries added via dnsmasq.
I noticed I can always ping and resolve hostname for my wired device, but wireless devices are often not reachable. DNS works fine and hostname is resolved, but ping gives me "Host is down" or "Host is unreachable" – even if target devices have Internet connection.
In most cases it's enough to wait for few minutes and host is reachable again. I have no "AP Isolated" set and with my DHCP server I propagate DNSes to 192.168.1.1 and Google's DNS 8.8.8.8.
Where should I start to look for a reason? How to debug?
I have one wired device and around 25 wireless devices – all with static IPs and additional hostname entries added via dnsmasq.
I noticed I can always ping and resolve hostname for my wired device, but wireless devices are often not reachable. DNS works fine and hostname is resolved, but ping gives me "Host is down" or "Host is unreachable" – even if target devices have Internet connection.
In most cases it's enough to wait for few minutes and host is reachable again. I have no "AP Isolated" set and with my DHCP server I propagate DNSes to 192.168.1.1 and Google's DNS 8.8.8.8.
Where should I start to look for a reason? How to debug?
