Hi,
I'm running a software UTM at home on a SFF board with 2 onboard NICs and a 2port PCIe NIC. Today my wife called me at work because 'WLAN is down'. I have the UTM in the cellar and an AP15 in my living room. As I monitor my UTM with our SUM Appliance I could see that it seemed to do fine except of the AP15. Webadmined to it, VPN was up, all interfaces up, only the accesspoint missing.
After I came home in the evening I tried rebooting the AP, no reaction, rebooted the switch between them, no reaction. Okay, lets have look via LAN... UTM not answering. Did VPN to work over cell phone Hotspot and looked into SUM again. Device online, connecting to Web Admin, no problem. Where is the failure... eth0 and eth1 no traffic at all (my AP is connected over 8port switch to eth0). Tried deactivating and reactivating interfaces, no problem at all, link and interface up. AP and LAN still no connection.
Rebooted the UTM, everything fine again, LAN online, AP online.
I have to say, eth0 (LAN)/1 (wife's parents network) are on the PCIe, eth2 (WAN) and eth3 (unused) on the internal NICs. eth1 ist currently connected getting IP via DHCP from their network, but only as a client, no default gateway for the UTM. I found out that this interface did a DHCP renew in the afternoon, so it couldn't be the dual NIC at all... which in fact has a cheap RTL chipset because a good Intel dualport NIC was always totally disappearing from the UTM at all :-(
I searched every log with entries of today but I didn't find any reason why my eth0 was in some kind of 'offline' state. I saw the AP disappearance at nearly 12:00, the DHCP renew of eth1 at 15:00 and after all coming up again at 19:00 after the reboot.
Has anyone a clue, where I could search for the failure?
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