Gateway bugs cause no internet dpinger sendto error 65



  • Getting the following in system gateway log, and have really limited internet, usually none. Was on 2.3.2 when it failed, just upgraded to 2.3.4.p1, same. Have tried ifconfig down/up on the interface. I can 100% access the pfsense page remotely over the WAN, but workstations cannot get out. I disabled gateway monitoring on that interface, no change, rebooted, same. All gateways show status online, and can ping them at 0ms.

    This is a Netgate SG-2440.

    
    Jul 27 20:04:08	dpinger		send_interval 500ms loss_interval 2000ms time_period 60000ms report_interval 0ms data_len 0 alert_interval 1000ms latency_alarm 500ms loss_alarm 20% dest_addr fe80::224:14ff:fe63:a5d9%igb0 bind_addr fe80::208:a2ff:fe0a:aefe%igb0 identifier "WAN1COX_DHCP6 "
    Jul 27 20:08:33	dpinger		WAN1CoxGW 187.187.187.177: sendto error: 65
    Jul 27 20:08:33	dpinger		WAN1CoxGW 187.187.187.177: sendto error: 65
    Jul 27 20:08:34	dpinger		WAN1CoxGW 187.187.187.177: sendto error: 65
    Jul 27 20:08:34	dpinger		WAN1CoxGW 187.187.187.177: sendto error: 65
    Jul 27 20:08:35	dpinger		WAN1CoxGW 187.187.187.177: sendto error: 65
    
    


  • Well…. turned out some user put a Tp-link managed switch in somewhere that was using 192.168.0.1, which by chance is the same as pfsense LAN. I dont know why, but this did not show up in the system log until hours later, and then it was in there every 20 seconds:

    Jul 27 11:15:40	kernel		arp: 84:16:f9:b9:9e:e9 is using my IP address 192.168.0.1 on igb1!
    Jul 27 11:15:35	kernel		arp: 84:16:f9:b9:9e:e9 is using my IP address 192.168.0.1 on igb1!
    Jul 27 11:15:03	kernel		arp: 84:16:f9:b9:9e:e9 is using my IP address 192.168.0.1 on igb1!
    Jul 27 11:14:46	kernel		arp: 84:16:f9:b9:9e:e9 is using my IP address 192.168.0.1 on igb1!