Been having some strange issues with a system recently upgraded to 5.3. Previously this computer was running OpenBSD 5.1, and was rock solid with close to a year of uptime.
I went through the regular upgrade procedure (booting from a 5.3 CD), and sysmerge, no problems reported during the upgrade. After the system has been running for a couple days, it stops responding to network traffic in or out. Some kind of weird routing issue is occurring, even affecting localhost: # ping localhost PING localhost (127.0.0.1): 56 data bytes ping: sendto: No route to host ping: wrote localhost 64 chars, ret=-1 --- localhost ping statistics --- 1 packets transmitted, 0 packets received, 100.0% packet loss After a few hours, everything returns to normal. The system is dual-core, so I tried both single & multiprocessor kernels to rule that out, but no luck. I've tried with the 5.3-stable kernel, and the 5.3-release kernel, but the problem occurs with both. I haven't tried 5.3-current yet. The dmesg is below. The system is lightly loaded, it is running a squid web proxy, dhcp server and arpwatch on different interfaces. There isn't anything in the logs, aside from network failures like Jun 10 12:45:33 hostname ntpd[21828]: bad peer from pool pool.ntp.org (192.95.61.224) Jun 10 12:45:33 hostname ntpd[21828]: bad peer from pool pool.ntp.org (192.75.12.11) I'm really stumped with this one. Any suggestions? Thanks. OpenBSD 5.3 (GENERIC) #50: Tue Mar 12 18:35:23 MDT 2013 dera...@i386.openbsd.org:/usr/src/sys/arch/i386/compile/GENERIC cpu0: Intel(R) Pentium(R) 4 CPU 3.40GHz ("GenuineIntel" 686-class) 3.40 GHz cpu0: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUS H,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,NXE,LONG,SSE3,DTES64,MWAIT,DS-CPL,E ST,CNXT-ID,CX16,xTPR,LAHF,PERF real mem = 2137088000 (2038MB) avail mem = 2091192320 (1994MB) mainbus0 at root bios0 at mainbus0: AT/286+ BIOS, date 07/12/06, BIOS32 rev. 0 @ 0xffe90, SMBIOS rev. 2.3 @ 0xf0450 (73 entries) bios0: vendor Dell Inc. version "A08" date 07/12/2006 bios0: Dell Inc. OptiPlex GX620 acpi0 at bios0: rev 2 acpi0: sleep states S0 S1 S3 S4 S5 acpi0: tables DSDT FACP SSDT APIC BOOT ASF! MCFG HPET acpi0: wakeup devices VBTN(S4) PCI0(S5) PCI4(S5) PCI2(S5) PCI3(S5) PCI1(S5) PCI5(S5) PCI6(S5) MOU_(S3) USB0(S3) USB1(S3) USB2(S3) USB3(S3) acpitimer0 at acpi0: 3579545 Hz, 24 bits acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat cpu0 at mainbus0: apid 0 (boot processor) cpu0: apic clock running at 199MHz cpu at mainbus0: not configured ioapic0 at mainbus0: apid 8 pa 0xfec00000, version 20, 24 pins ioapic0: misconfigured as apic 0, remapped to apid 8 acpimcfg0 at acpi0 addr 0xf0000000, bus 0-63 acpihpet0 at acpi0: 14318179 Hz acpiprt0 at acpi0: bus 4 (PCI4) acpiprt1 at acpi0: bus 2 (PCI2) acpiprt2 at acpi0: bus 3 (PCI3) acpiprt3 at acpi0: bus 1 (PCI1) acpiprt4 at acpi0: bus -1 (PCI5) acpiprt5 at acpi0: bus -1 (PCI6) acpiprt6 at acpi0: bus 0 (PCI0) acpicpu0 at acpi0 acpibtn0 at acpi0: VBTN bios0: ROM list: 0xc0000/0xa800! 0xca800/0x1000 0xcb800/0x2000! 0xcd800/0x2800 cpu0: Enhanced SpeedStep disabled by BIOS pci0 at mainbus0 bus 0: configuration mode 1 (bios) pchb0 at pci0 dev 0 function 0 "Intel 82945G Host" rev 0x02 ppb0 at pci0 dev 1 function 0 "Intel 82945G PCIE" rev 0x02: apic 8 int 16 pci1 at ppb0 bus 1 em0 at pci1 dev 0 function 0 "Intel PRO/1000 PT (82571EB)" rev 0x06: apic 8 int 16, address 00:15:17:6f:bc:5c em1 at pci1 dev 0 function 1 "Intel PRO/1000 PT (82571EB)" rev 0x06: apic 8 int 17, address 00:15:17:6f:bc:5d vga1 at pci0 dev 2 function 0 "Intel 82945G Video" rev 0x02 wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation) wsdisplay0: screen 1-5 added (80x25, vt100 emulation) intagp0 at vga1 agp0 at intagp0: aperture at 0xe0000000, size 0x10000000 inteldrm0 at vga1: apic 8 int 16 drm0 at inteldrm0 "Intel 82945G Video" rev 0x02 at pci0 dev 2 function 1 not configured ppb1 at pci0 dev 28 function 0 "Intel 82801GB PCIE" rev 0x01: apic 8 int 16 pci2 at ppb1 bus 2 bge0 at pci2 dev 0 function 0 "Broadcom BCM5751" rev 0x01, BCM5750 A1 (0x4001): apic 8 int 16, address 00:13:72:98:43:7d brgphy0 at bge0 phy 1: BCM5750 10/100/1000baseT PHY, rev. 0 ppb2 at pci0 dev 28 function 1 "Intel 82801GB PCIE" rev 0x01: apic 8 int 17 pci3 at ppb2 bus 3 uhci0 at pci0 dev 29 function 0 "Intel 82801GB USB" rev 0x01: apic 8 int 21 uhci1 at pci0 dev 29 function 1 "Intel 82801GB USB" rev 0x01: apic 8 int 22 uhci2 at pci0 dev 29 function 2 "Intel 82801GB USB" rev 0x01: apic 8 int 18 uhci3 at pci0 dev 29 function 3 "Intel 82801GB USB" rev 0x01: apic 8 int 23 ehci0 at pci0 dev 29 function 7 "Intel 82801GB USB" rev 0x01: apic 8 int 21 usb0 at ehci0: USB revision 2.0 uhub0 at usb0 "Intel EHCI root hub" rev 2.00/1.00 addr 1 ppb3 at pci0 dev 30 function 0 "Intel 82801BA Hub-to-PCI" rev 0xe1 pci4 at ppb3 bus 4 em2 at pci4 dev 0 function 0 "Intel PRO/1000GT (82541GI)" rev 0x05: apic 8 int 16, address 00:1b:21:2f:a9:35 xl0 at pci4 dev 2 function 0 "3Com 3c905B 100Base-TX" rev 0x30: apic 8 int 18, address 00:01:02:c8:45:47 exphy0 at xl0 phy 24: 3Com internal media interface auich0 at pci0 dev 30 function 2 "Intel 82801GB AC97" rev 0x01: apic 8 int 23, ICH7 AC97 ac97: codec id 0x41445374 (Analog Devices AD1981B) ac97: codec features headphone, 20 bit DAC, No 3D Stereo audio0 at auich0 ichpcib0 at pci0 dev 31 function 0 "Intel 82801GB LPC" rev 0x01: PM disabled pciide0 at pci0 dev 31 function 1 "Intel 82801GB IDE" rev 0x01: DMA, channel 0 configured to compatibility, channel 1 configured to compatibility atapiscsi0 at pciide0 channel 0 drive 0 scsibus0 at atapiscsi0: 2 targets cd0 at scsibus0 targ 0 lun 0: <Optiarc, DVD+-RW ND-3570A, 104B> ATAPI 5/cdrom removable atapiscsi1 at pciide0 channel 0 drive 1 scsibus1 at atapiscsi1: 2 targets cd1 at scsibus1 targ 0 lun 0: <ASUS, CD-S400/A, 2.3S> ATAPI 5/cdrom removable cd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2 cd1(pciide0:0:1): using PIO mode 4, Ultra-DMA mode 2 pciide0: channel 1 ignored (disabled) pciide1 at pci0 dev 31 function 2 "Intel 82801GB SATA" rev 0x01: DMA, channel 0 configured to native-PCI, channel 1 configured to native-PCI pciide1: using apic 8 int 20 for native-PCI interrupt wd0 at pciide1 channel 0 drive 0: <ST3160812AS> wd0: 16-sector PIO, LBA48, 152587MB, 312500000 sectors wd0(pciide1:0:0): using PIO mode 4, Ultra-DMA mode 6 ichiic0 at pci0 dev 31 function 3 "Intel 82801GB SMBus" rev 0x01: SMI iic0 at ichiic0 spdmem0 at iic0 addr 0x50: 512MB DDR2 SDRAM non-parity PC2-4200CL5 spdmem1 at iic0 addr 0x51: 512MB DDR2 SDRAM non-parity PC2-4200CL5 spdmem2 at iic0 addr 0x52: 512MB DDR2 SDRAM non-parity PC2-4200CL5 spdmem3 at iic0 addr 0x53: 512MB DDR2 SDRAM non-parity PC2-4200CL5 usb1 at uhci0: USB revision 1.0 uhub1 at usb1 "Intel UHCI root hub" rev 1.00/1.00 addr 1 usb2 at uhci1: USB revision 1.0 uhub2 at usb2 "Intel UHCI root hub" rev 1.00/1.00 addr 1 usb3 at uhci2: USB revision 1.0 uhub3 at usb3 "Intel UHCI root hub" rev 1.00/1.00 addr 1 usb4 at uhci3: USB revision 1.0 uhub4 at usb4 "Intel UHCI root hub" rev 1.00/1.00 addr 1 isa0 at ichpcib0 isadma0 at isa0 com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo pckbc0 at isa0 port 0x60/5 pckbd0 at pckbc0 (kbd slot) pckbc0: using irq 1 for kbd slot wskbd0 at pckbd0: console keyboard, using wsdisplay0 pcppi0 at isa0 port 0x61 spkr0 at pcppi0 lpt0 at isa0 port 0x378/4 irq 7 npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16 fdc0 at isa0 port 0x3f0/6 irq 6 drq 2 fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec mtrr: Pentium Pro MTRR support vscsi0 at root scsibus2 at vscsi0: 256 targets softraid0 at root scsibus3 at softraid0: 256 targets root on wd0a (782b3d7fb3f21963.a) swap on wd0b dump on wd0b