Can it be related to this: dropped due to no socket? # netstat -ss|grep -A7 ^udp udp: 819120 datagrams received 15494 with no checksum 22621 dropped due to no socket 170569 broadcast/multicast datagrams dropped due to no socket 625930 delivered 6497322 datagrams output 341480 missed PCB cache
G On 29/04/2025 15:36, Kapetanakis Giannis wrote: > Hi, > > I'm having this busy router with multiple private networks behind which is > also doing dns caching services. > vlans and carp are also involved. > > I'm getting this almost every second on my logs from multiple/different vlans > and IPs (had it also on 7.6 as well on 7.7 now). > > Apr 29 15:11:49 unbound: [18412:1] notice: remote address is 10.14.0.196 port > 44886 > Apr 29 15:11:54 unbound: [18412:1] notice: sendto failed: Resource > temporarily unavailable > > tcpdump on this shows: > 15:11:49.420280 10.14.0.196.44886 > 10.14.0.1.domain: 13+ [2au] A? > google.com.(74) (DF) [tos 0xe0] > 15:11:52.519896 10.14.0.196.44886 > 10.14.0.1.domain: 13+ [2au] A? > google.com.(74) (DF) [tos 0xe0] > 15:11:52.520048 10.14.0.1.domain > 10.14.0.196.44886: 13 FormErr- 0/0/2(74) > > I believe I'm hitting some kind of limit either in the OS or in unbound. > > What I have and tested so far: > kern.maxfiles=32768 > > login.conf: > unbound:\ > :openfiles=32768:\ > :tc=daemon: > > unbound.conf: > num-threads: 4 > num-queries-per-thread: 4096 > outgoing-range: 16384 > so-rcvbuf: 2m > so-sndbuf: 2m > > no luck so far. > > pf states ~ 30K (hard limit 200K) > load 1.2 (mostly by pmacctd) > hw.machine=amd64 > hw.model=Intel(R) Xeon(R) CPU X5660 @ 2.80GHz > hw.ncpu=6 > > Any ideas? > > Thanks, > > G > > > >
