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Everything working fine and then suddenly the network fails although the internet stays connected. Seems to be a DHCP failure here are the log entries
Apr 8 09:23:07 user info syslog: WLAN Schedule Control on wl1 exit
Apr 8 09:23:08 daemon warn kernel: __ratelimit: 59 callbacks suppressed
Apr 8 09:23:08 daemon warn kernel: eth3: received packet with own address as source address
Apr 8 09:23:09 daemon warn kernel: eth3: received packet with own address as source address
Apr 8 09:23:09 daemon warn kernel: eth3: received packet with own address as source address
Apr 8 09:23:10 daemon warn kernel: eth3: received packet with own address as source

michaelbpe wrote:Everything working fine and then suddenly the network fails although the internet stays connected. Seems to be a DHCP failure here are the log entries
Apr 8 09:23:07 user info syslog: WLAN Schedule Control on wl1 exit
Apr 8 09:23:08 daemon warn kernel: __ratelimit: 59 callbacks suppressed
Apr 8 09:23:08 daemon warn kernel: eth3: received packet with own address as source address
Apr 8 09:23:09 daemon warn kernel: eth3: received packet with own address as source address
Apr 8 09:23:09 daemon warn kernel: eth3: received packet with own address as source address
Apr 8 09:23:10 daemon warn kernel: eth3: received packet with own address as source

What device is connected to eth3?

Netgear switch

michaelbpe wrote:Netgear switch

what's connected to the netgear switch??

four other switches and connected to them are PCs all configured to DHCP Onbe of the switches is managed but it has an IP address outside the DHCP server range

michaelbpe wrote:four other switches and connected to them are PCs all configured to DHCP Onbe of the switches is managed but it has an IP address outside the DHCP server range

Can you try disconnecting the managed switch from the network and see if the 'received packet with own address as source address' log disappears ??