> Source: [sk108587](https://support.checkpoint.com/results/sk/sk108587)

# sk108587 - "ip route get x.x.x.x" command returns 'RTNETLINK answers: No buffer space available'

| Property | Value |
|----------|-------|
| Solution ID | sk108587 |
| Date Created | 2015-12-05 |
| Last Modified | 2019-06-25 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20 |
| OS | Gaia |

## Symptoms

- * The `'ip route get x.x.x.x'` command generates output: "RTNETLINK answers: No buffer space available".
* `'kernel: neighbour table overflow'` message appears repeatedly in `/var/log/messages` file.
* ping x.x.x.x connect: No buffer space available.
* Firewall Logs show drops for "Missing OS route".

## Cause

The ARP cache is overflowing. The most possible reason - too much traffic on the network (generated by some application, by some hosts, or by related factors).

## Solution

This solution requires authentication. Please log in to view the full solution.

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