Packet loss in one of the gateways

[samiram]

Hi All,

I had this issue of intermittent packet losses in one of my gateways. NIC, monitoring ip and isp link seems to be ok but that specific gateway still seems to be reporting a packet loss. I checked the usual opnsense logs and logs from underlying hardware (running on proxmos) but still no issue to be found. Resource utilization is normal too. Any idea on where to check next? FYI this specific interface is running on a usb ethernet adapter directly attached/configured to proxmos which works fine without any errors or packet losses.

WAN_GW   (active)
192.168.1.1
RTT: 6.8 ms
RTTd: 1.1 ms
Loss: 1.0 %

IPHONE4G_GW 
172.20.10.1
RTT: 69.0 ms
RTTd: 24.7 ms
Loss: 0.0 %

Versions
OPNsense 26.1.2-amd64
FreeBSD 14.3-RELEASE-p8
OpenSSL 3.0.19

Load average
0.96, 0.69, 0.61

[samiram]

BTW I see below entries from the webgiu log whenever there is a packet loss.

Code Select Expand

2026-02-13T11:05:38Errorlighttpd(/usr/obj/usr/ports/www/lighttpd/work/lighttpd-1.4.82/src/gw_backend.c.533) connect() /var/lib/php/tmp/php-fastcgi.socket-3: Connection refused
2026-02-13T11:02:36Errorlighttpd(/usr/obj/usr/ports/www/lighttpd/work/lighttpd-1.4.82/src/gw_backend.c.533) connect() /var/lib/php/tmp/php-fastcgi.socket-1: Connection refused
2026-02-13T11:00:06Errorlighttpd(/usr/obj/usr/ports/www/lighttpd/work/lighttpd-1.4.82/src/gw_backend.c.533) connect() /var/lib/php/tmp/php-fastcgi.socket-1: Connection refused
2026-02-13T10:52:06Errorlighttpd(/usr/obj/usr/ports/www/lighttpd/work/lighttpd-1.4.82/src/gw_backend.c.533) connect() /var/lib/php/tmp/php-fastcgi.socket-2: Connection refused
2026-02-13T10:41:24Errorlighttpd(/usr/obj/usr/ports/www/lighttpd/work/lighttpd-1.4.82/src/gw_backend.c.533) connect() /var/lib/php/tmp/php-fastcgi.socket-0: Connection refused
2026-02-13T10:14:44Errorlighttpd(/usr/obj/usr/ports/www/lighttpd/work/lighttpd-1.4.82/src/gw_backend.c.533) connect() /var/lib/php/tmp/php-fastcgi.socket-4: Connection refused
2026-02-13T10:11:26Errorlighttpd(/usr/obj/usr/ports/www/lighttpd/work/lighttpd-1.4.82/src/gw_backend.c.533) connect() /var/lib/php/tmp/php-fastcgi.socket-2: Connection refused
2026-02-13T10:07:16Errorlighttpd(/usr/obj/usr/ports/www/lighttpd/work/lighttpd-1.4.82/src/gw_backend.c.533) connect() /var/lib/php/tmp/php-fastcgi.socket-5: Connection refused
2026-02-13T10:02:03Errorlighttpd(/usr/obj/usr/ports/www/lighttpd/work/lighttpd-1.4.82/src/gw_backend.c.533) connect() /var/lib/php/tmp/php-fastcgi.socket-3: Connection refused
2026-02-13T09:56:39Errorlighttpd(/usr/obj/usr/ports/www/lighttpd/work/lighttpd-1.4.82/src/gw_backend.c.533) connect() /var/lib/php/tmp/php-fastcgi.socket-4: Connection refused
2026-02-13T09:54:04Errorlighttpd(/usr/obj/usr/ports/www/lighttpd/work/lighttpd-1.4.82/src/mod_openssl.c.4624) SSL: addr:192.168.1.88 ssl_err:5 rd:-1 errno:60: Operation timed out
2026-02-13T09:48:25Errorlighttpd(/usr/obj/usr/ports/www/lighttpd/work/lighttpd-1.4.82/src/gw_backend.c.533) connect() /var/lib/php/tmp/php-fastcgi.socket-4: Connection refused
2026-02-13T09:42:53Errorlighttpd(/usr/obj/usr/ports/www/lighttpd/work/lighttpd-1.4.82/src/gw_backend.c.533) connect() /var/lib/php/tmp/php-fastcgi.socket-1: Connection refused
2026-02-13T09:04:57Errorlighttpd(/usr/obj/usr/ports/www/lighttpd/work/lighttpd-1.4.82/src/gw_backend.c.533) connect() /var/lib/php/tmp/php-fastcgi.socket-3: Connection refused
2026-02-13T01:30:15Errorlighttpd(/usr/obj/usr/ports/www/lighttpd/work/lighttpd-1.4.82/src/gw_backend.c.533) connect() /var/lib/php/tmp/php-fastcgi.socket-2: Connection refused
2026-02-13T01:01:05Errorlighttpd(/usr/obj/usr/ports/www/lighttpd/work/lighttpd-1.4.82/src/gw_backend.c.533) connect() /var/lib/php/tmp/php-fastcgi.socket-0: Connection refused
2026-02-13T00:17:05Errorlighttpd(/usr/obj/usr/ports/www/lighttpd/work/lighttpd-1.4.82/src/gw_backend.c.533) connect() /var/lib/php/tmp/php-fastcgi.socket-1: Connection refused
2026-02-13T00:14:04Errorlighttpd(/usr/obj/usr/ports/www/lighttpd/work/lighttpd-1.4.82/src/gw_backend.c.533) connect() /var/lib/php/tmp/php-fastcgi.socket-2: Connection refused
2026-02-13T00:10:22Errorlighttpd(/usr/obj/usr/ports/www/lighttpd/work/lighttpd-1.4.82/src/gw_backend.c.533) connect() /var/lib/php/tmp/php-fastcgi.socket-0: Connection refused
2026-02-12T23:30:20Errorlighttpd(/usr/obj/usr/ports/www/lighttpd/work/lighttpd-1.4.82/src/gw_backend.c.533) connect() /var/lib/php/tmp/php-fastcgi.socket-1: Connection refused
2026-02-12T23:30:09Errorlighttpd(/usr/obj/usr/ports/www/lighttpd/work/lighttpd-1.4.82/src/mod_openssl.c.4624) SSL: addr:192.168.1.88 ssl_err:5 rd:-1 errno:60: Operation timed out