Hi nusenu, What I think happens is that this is so-sndbuf for UDP packets, and the so-sndbuf option solves it. But you already use that so I do not know any further. Where you could look further is in the sendto(2) system call documentation, for UDP packets, when it gives this ENOBUFS error code. The FreeBSD documentation suggest two causes for this error code, one it that there was not enough memory for a buffer, and the second that the network interface has stopped sending and it is full.
Best regards, Wouter On 1/6/19 11:07 PM, nusenu via Unbound-users wrote: > after reading [1] I also lowered "num-queries-per-thread" > to 1/4 of the original value, with no positive effect > > > > [1] https://nlnetlabs.nl/pipermail/unbound-users/2014-February/008574.html > >
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