[strongSwan] sending DHCP RELEASE failed: No buffer space available

[Thomas Egerer]

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Moinsen Harald,

On 12/03/2016 02:52 PM, Harald Dunkel wrote:
> Hi folks,
> 
> charon mentions a few lines in syslog every day saying
> 
> sending DHCP RELEASE failed: No buffer space available
This error message originates from src/libcharon/plugins/dhcp/dhcp_socket.c
It's generated after a sendto failed. Judging from sendto(2):
<snip>
ENOBUFS
   The  output queue for a network interface was full.  This generally indicates that the interface has stopped sending, but may be caused by transient congestion.
   (Normally, this does  not occur in Linux.  Packets are just silently dropped when a device queue overflows.)
<snap>
You have a problem sending your packets. Try netstat (netstat -planou)
and check the Send-Q.

> 
> I found https://lists.strongswan.org/pipermail/users/2015-February/007438.html
> but this seems to be a different problem.
Totally wrong direction.

> 
> What would be your advice?
See my advice above.


Cheers,
Thomas
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