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44 lines
2.5 KiB
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44 lines
2.5 KiB
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====================================
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Gateways and monitoring
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====================================
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The address you are trying to monitor should be reachable using the interface the gateway is attached to, either
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directly or using a static route (check :menuselection:`System --> Routes --> Status`).
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---------------------------------
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dpinger:.. sendto error: XXX
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---------------------------------
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Usually found in :menuselection:`System --> Log Files --> General`, every code has a meaning, usually explained in
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`errno.h <https://github.com/opnsense/src/blob/master/sys/sys/errno.h>`__ (:code:`man errno`)
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Some common ones are explained below:
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====== ==================== =================================================================================
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XX Name Description
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====== ==================== =================================================================================
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55 ENOBUFS No buffer space available. An operation on a socket or pipe was not performed
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because the system lacked sufficient buffer space or because a queue was full.
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**Check connectivity from the machine itself using** :code:`ping`, most common
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mistakes are misconfigured routes, interface issues (disconnected) and
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policy based routing issues forcing traffic to the wrong target
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(using :code:`reply-to`)
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64 EHOSTDOWN Host is down. A socket operation failed because the destination host was down.
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**Expecting an (layer 2) ARP response but none was returned, often misconfigured
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subnets or hosts are actually not accessible over L2**
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65 EHOSTUNREACH No route to host. A socket operation was attempted to an unreachable host
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**The routing table is a good place to look**
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(:menuselection:`System --> Routes --> Status`)
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====== ==================== =================================================================================
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------------------------------------------
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arpresolve: can't allocate llinfo for..
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------------------------------------------
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This message usually means that the configured gateway lies outside the configured subnets for this firewall (for IPv4).
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.. Tip::
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Double check the subnets of your interface and virtual IP's, you can also use :menuselection:`Interfaces --> Overview`
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for a quick list of all configured addresses.
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