PROBLEM: only one specific device continuously triggers Unbound notice
VERSION: OpenBSD 6.6
FLAVOR: stable
LATEST PATCH: "024: SECURITY FIX: April 7, 2020"
DMESG: attached as "dmesg.txt"
UNBOUND LOG: attached as "unbound.log"
Dear community.
After studying what I could find on this topic, it seems that I am
unable to understand what my problem exactly is. In hope you might set
some light on this for me.
I have exactly one device - an Apple smartphone - within one of the
subnets, that Unbound is not able to send "some" data. The log tells us
"sendto failed: No buffer space available". Beside the error message,
the device seems to work without any issues. It gets its DNS queries
resolved. And it is the only device triggering this unbound behaviour.
WHAT HAS BEEN DONE SO FAR:
(1) Ping from router to device is possible
(2) login.conf
unbound:\
:openfiles=2048:\
(3) sysctl.conf
kern.bufcachepercent=80
net.inet.udp.recvspace=655360
net.inet.udp.sendspace=655360
(4) pf.conf
bnd_flows = "1024"
bnd_qlimit = "1024"
# respective queue where the traffic from router to device should pass
queue int_guests parent int_ingress bandwidth $int_guests max
$int_guests_max flows $bnd_flows qlimit $bnd_qlimit
As experts may already suspect, the listed changed are wild guesses not
understanding the core of the issue.
Any suggestions?
Cheers.
Ben
OpenBSD 6.6 (GENERIC.MP) #7: Thu Mar 12 11:55:22 MDT 2020
r...@syspatch-66-amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP
real mem = 4277010432 (4078MB)
avail mem = 4134674432 (3943MB)
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.51 @ 0xdfeea000 (31 entries)
bios0: vendor Phoenix Technologies LTD version "6.00" date 08/25/2007
bios0: Supermicro PDSMi
acpi0 at bios0: ACPI 1.0
acpi0: sleep states S0 S1 S4 S5
acpi0: tables DSDT FACP MCFG APIC BOOT ASF! SSDT
acpi0: wakeup devices DEV1(S5) EXP1(S5) PXHA(S5) EXP5(S5) EXP6(S5) PCIB(S5)
KBC0(S1) MSE0(S1) COM1(S5) COM2(S5) USB1(S4) USB2(S4) USB3(S4) USB4(S4) EUSB(S4)
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpimcfg0 at acpi0
acpimcfg0: addr 0xf0000000, bus 0-14
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Intel(R) Xeon(R) CPU 3050 @ 2.13GHz, 2128.28 MHz, 06-0f-02
cpu0:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,NXE,LONG,LAHF,PERF,SENSOR,MELTDOWN
cpu0: 2MB 64b/line 8-way L2 cache
cpu0: smt 0, core 0, package 0
mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges
cpu0: apic clock running at 265MHz
cpu0: mwait min=64, max=64, C-substates=0.2, IBE
cpu1 at mainbus0: apid 1 (application processor)
cpu1: Intel(R) Xeon(R) CPU 3050 @ 2.13GHz, 2128.01 MHz, 06-0f-02
cpu1:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,NXE,LONG,LAHF,PERF,SENSOR,MELTDOWN
cpu1: 2MB 64b/line 8-way L2 cache
cpu1: smt 0, core 1, package 0
ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 20, 24 pins
ioapic1 at mainbus0: apid 3 pa 0xfec10000, version 20, 24 pins
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus 1 (DEV1)
acpiprt2 at acpi0: bus 9 (EXP1)
acpiprt3 at acpi0: bus 10 (PXHA)
acpiprt4 at acpi0: bus 13 (EXP5)
acpiprt5 at acpi0: bus 14 (EXP6)
acpiprt6 at acpi0: bus 15 (PCIB)
acpicpu0 at acpi0: C1(@1 halt!)
acpicpu1 at acpi0: C1(@1 halt!)
acpipci0 at acpi0 PCI0: _OSC failed
acpicmos0 at acpi0
"PNP0A05" at acpi0 not configured
acpibtn0 at acpi0: PWRB
ipmi at mainbus0 not configured
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 "Intel E7230 Host" rev 0xc0
ppb0 at pci0 dev 1 function 0 "Intel E7230 PCIE" rev 0xc0: msi
pci1 at ppb0 bus 1
ppb1 at pci0 dev 28 function 0 "Intel 82801GB PCIE" rev 0x01: msi
pci2 at ppb1 bus 9
ppb2 at pci2 dev 0 function 0 "Intel 6702PXH PCIE-PCIX" rev 0x09
pci3 at ppb2 bus 10
"Intel IOxAPIC" rev 0x09 at pci2 dev 0 function 1 not configured
ppb3 at pci0 dev 28 function 4 "Intel 82801G PCIE" rev 0x01: msi
pci4 at ppb3 bus 13
em0 at pci4 dev 0 function 0 "Intel 82573E" rev 0x03: msi, address
00:30:48:92:24:b0
ppb4 at pci0 dev 28 function 5 "Intel 82801G PCIE" rev 0x01: msi
pci5 at ppb4 bus 14
em1 at pci5 dev 0 function 0 "Intel 82573L" rev 0x00: msi, address
00:30:48:92:24:b1
uhci0 at pci0 dev 29 function 0 "Intel 82801GB USB" rev 0x01: apic 2 int 23
uhci1 at pci0 dev 29 function 1 "Intel 82801GB USB" rev 0x01: apic 2 int 19
uhci2 at pci0 dev 29 function 2 "Intel 82801GB USB" rev 0x01: apic 2 int 18
uhci3 at pci0 dev 29 function 3 "Intel 82801GB USB" rev 0x01: apic 2 int 16
ehci0 at pci0 dev 29 function 7 "Intel 82801GB USB" rev 0x01: apic 2 int 23
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 configuration 1 interface 0 "Intel EHCI root hub" rev 2.00/1.00
addr 1
ppb5 at pci0 dev 30 function 0 "Intel 82801BA Hub-to-PCI" rev 0xe1
pci6 at ppb5 bus 15
radeondrm0 at pci6 dev 0 function 0 "ATI ES1000" rev 0x02
drm0 at radeondrm0
radeondrm0: apic 2 int 16
em2 at pci6 dev 2 function 0 "Intel 82541GI" rev 0x05: apic 2 int 20, address
90:e2:ba:c9:22:1c
pcib0 at pci0 dev 31 function 0 "Intel 82801GB LPC" rev 0x01
pciide0 at pci0 dev 31 function 2 "Intel 82801GB SATA" rev 0x01: DMA, channel 0
configured to native-PCI, channel 1 configured to native-PCI
pciide0: using apic 2 int 19 for native-PCI interrupt
wd0 at pciide0 channel 0 drive 0: <WDC WD3200BEKT-00A25T0>
wd0: 16-sector PIO, LBA48, 305245MB, 625142448 sectors
wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 6
ichiic0 at pci0 dev 31 function 3 "Intel 82801GB SMBus" rev 0x01: apic 2 int 19
iic0 at ichiic0
lm1 at iic0 addr 0x2d: W83627HF
wbng0 at iic0 addr 0x2f: w83793g
spdmem0 at iic0 addr 0x50: 1GB DDR2 SDRAM ECC PC2-6400CL6
spdmem1 at iic0 addr 0x51: 1GB DDR2 SDRAM ECC PC2-6400CL6
spdmem2 at iic0 addr 0x52: 1GB DDR2 SDRAM ECC PC2-6400CL6
spdmem3 at iic0 addr 0x53: 1GB DDR2 SDRAM ECC PC2-6400CL6
usb1 at uhci0: USB revision 1.0
uhub1 at usb1 configuration 1 interface 0 "Intel UHCI root hub" rev 1.00/1.00
addr 1
usb2 at uhci1: USB revision 1.0
uhub2 at usb2 configuration 1 interface 0 "Intel UHCI root hub" rev 1.00/1.00
addr 1
usb3 at uhci2: USB revision 1.0
uhub3 at usb3 configuration 1 interface 0 "Intel UHCI root hub" rev 1.00/1.00
addr 1
usb4 at uhci3: USB revision 1.0
uhub4 at usb4 configuration 1 interface 0 "Intel UHCI root hub" rev 1.00/1.00
addr 1
isa0 at pcib0
isadma0 at isa0
fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
com1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
pckbc0 at isa0 port 0x60/5 irq 1 irq 12
pckbd0 at pckbc0 (kbd slot)
wskbd0 at pckbd0: console keyboard
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
lpt0 at isa0 port 0x378/4 irq 7
wbsio0 at isa0 port 0x2e/2: W83627HF rev 0x41
lm2 at wbsio0 port 0x290/8: W83627HF
lm1: disabling sensors due to alias with lm2
uhidev0 at uhub1 port 1 configuration 1 interface 0 "Cherry Mikroschalter
product 0x0011" rev 2.00/1.00 addr 2
uhidev0: iclass 3/1
ukbd0 at uhidev0: 8 variable keys, 6 key codes
wskbd1 at ukbd0 mux 1
vscsi0 at root
scsibus1 at vscsi0: 256 targets
softraid0 at root
scsibus2 at softraid0: 256 targets
root on wd0a (e5c50e452edbcf85.a) swap on wd0b dump on wd0b
initializing kernel modesetting (RV100 0x1002:0x515E 0x15D9:0x7980 0x02).
radeondrm0: 1280x1024, 16bpp
wsdisplay0 at radeondrm0 mux 1: console (std, vt100 emulation), using wskbd0
wskbd1: connecting to wsdisplay0
wsdisplay0: screen 1-5 added (std, vt100 emulation)
pppoe0: LCP keepalive timeout
Apr 15 15:49:45 unbound[8432:0] info: service stopped (unbound 1.9.4).
Apr 15 15:49:45 unbound[8432:0] info: server stats for thread 0: 1413 queries, 367 answers from cache, 1046 recursions, 11 prefetch, 0 rejected by ip ratelimiting
Apr 15 15:49:45 unbound[8432:0] info: server stats for thread 0: requestlist max 5 avg 0.160833 exceeded 0 jostled 0
Apr 15 15:49:45 unbound[8432:0] info: average recursion processing time 0.157409 sec
Apr 15 15:49:45 unbound[8432:0] info: histogram of recursion processing times
Apr 15 15:49:45 unbound[8432:0] info: [25%]=0.049828 median[50%]=0.080788 [75%]=0.171188
Apr 15 15:49:45 unbound[8432:0] info: lower(secs) upper(secs) recursions
Apr 15 15:49:45 unbound[8432:0] info: 0.000000 0.000001 6
Apr 15 15:49:45 unbound[8432:0] info: 0.016384 0.032768 41
Apr 15 15:49:45 unbound[8432:0] info: 0.032768 0.065536 412
Apr 15 15:49:45 unbound[8432:0] info: 0.065536 0.131072 275
Apr 15 15:49:45 unbound[8432:0] info: 0.131072 0.262144 165
Apr 15 15:49:45 unbound[8432:0] info: 0.262144 0.524288 104
Apr 15 15:49:45 unbound[8432:0] info: 0.524288 1.000000 28
Apr 15 15:49:45 unbound[8432:0] info: 1.000000 2.000000 10
Apr 15 15:49:45 unbound[8432:0] info: 2.000000 4.000000 5
Apr 15 15:49:46 unbound[89443:0] notice: init module 0: validator
Apr 15 15:49:46 unbound[89443:0] notice: init module 1: iterator
Apr 15 15:49:46 unbound[89443:0] info: start of service (unbound 1.9.4).
Apr 15 19:48:38 unbound[22248:1] notice: sendto failed: No buffer space available
Apr 15 19:48:38 unbound[22248:1] notice: remote address is 192.168.4.202 port 49753
