This is on a 6.0-release box which has been up for a while. BGP sessions are up, but nexthops are unusable because bgpd thinks the interface is down. Can anyone think of more information to gather before I restart things?
$ ifconfig em1 | head -6 em1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500 lladdr 00:12:c0:08:39:ef index 2 priority 0 llprio 3 groups: phys egress outside media: Ethernet autoselect (1000baseT full-duplex,rxpause,txpause) status: active $ top | grep bgp 18527 _bgpd 2 0 11M 10M sleep poll 67.9H 0.93% bgpd: session engine 12590 _bgpd 2 0 478M 487M sleep poll 672:34 0.00% bgpd: route decision engine 57139 root 2 0 42M 51M sleep poll 85:29 0.00% /usr/sbin/bgpd -v Nexthop Route Prio Gateway Iface ... ... 4 connected em1 (UP, no carrier) $ bgpctl sh int Interface Nexthop state Flags Link state pfsync0 ok UP unknown carp276 ok UP CARP, master carp275 ok UP CARP, master carp271 ok UP CARP, master vlan730 ok UP Ethernet, active, 1000 MBit/s vlan278 ok UP Ethernet, active vlan276 ok UP Ethernet, active vlan275 ok UP Ethernet, active vlan274 invalid Ethernet, no carrier vlan271 ok UP Ethernet, active vlan2244 ok UP Ethernet, active trunk0 ok UP Ethernet, active pflog0 ok UP unknown lo1 ok UP unknown bnx1 ok UP Ethernet, active, 1000 MBit/s bnx0 ok UP active, 1000 MBit/s lo0 ok UP unknown enc0 invalid active em5 ok UP Ethernet, active, 1000 MBit/s em4 ok UP Ethernet, active, 1000 MBit/s em3 invalid UP Ethernet, no carrier em2 ok UP Ethernet, active, 100 MBit/s em1 invalid UP Ethernet, no carrier em0 ok UP active, 1000 MBit/s OpenBSD 6.0 (GENERIC.MP) #2319: Tue Jul 26 13:00:43 MDT 2016 dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP real mem = 4268331008 (4070MB) avail mem = 4134498304 (3942MB) mpath0 at root scsibus0 at mpath0: 256 targets mainbus0 at root bios0 at mainbus0: SMBIOS rev. 2.6 @ 0xbf79c000 (62 entries) bios0: vendor Dell Inc. version "1.1.4" date 10/30/2009 bios0: Dell Inc. PowerEdge R210 acpi0 at bios0: rev 2 acpi0: sleep states S0 S4 S5 acpi0: tables DSDT FACP APIC SPCR HPET DMAR MCFG WD__ SLIC ERST HEST BERT EINJ TCPA SSDT acpi0: wakeup devices PCI0(S5) USBA(S0) USBB(S0) acpitimer0 at acpi0: 3579545 Hz, 24 bits acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat cpu0 at mainbus0: apid 0 (boot processor) cpu0: Intel(R) Xeon(R) CPU X3430 @ 2.40GHz, 2394.37 MHz 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,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,POPCNT,NXE,LONG,LAHF,PERF,ITSC,SENSOR cpu0: 256KB 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 132MHz cpu0: mwait min=64, max=64, C-substates=0.2.1.1, IBE cpu1 at mainbus0: apid 2 (application processor) cpu1: Intel(R) Xeon(R) CPU X3430 @ 2.40GHz, 2393.99 MHz 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,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,POPCNT,NXE,LONG,LAHF,PERF,ITSC,SENSOR cpu1: 256KB 64b/line 8-way L2 cache cpu1: smt 0, core 1, package 0 cpu2 at mainbus0: apid 4 (application processor) cpu2: Intel(R) Xeon(R) CPU X3430 @ 2.40GHz, 2393.99 MHz cpu2: 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,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,POPCNT,NXE,LONG,LAHF,PERF,ITSC,SENSOR cpu2: 256KB 64b/line 8-way L2 cache cpu2: smt 0, core 2, package 0 cpu3 at mainbus0: apid 6 (application processor) cpu3: Intel(R) Xeon(R) CPU X3430 @ 2.40GHz, 2393.99 MHz cpu3: 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,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,POPCNT,NXE,LONG,LAHF,PERF,ITSC,SENSOR cpu3: 256KB 64b/line 8-way L2 cache cpu3: smt 0, core 3, package 0 ioapic0 at mainbus0: apid 0 pa 0xfec00000, version 20, 24 pins acpihpet0 at acpi0: 14318179 Hz acpimcfg0 at acpi0 addr 0xe0000000, bus 0-255 acpiprt0 at acpi0: bus 0 (PCI0) acpiprt1 at acpi0: bus 1 (LYD0) acpiprt2 at acpi0: bus -1 (LYD2) acpiprt3 at acpi0: bus -1 (HVD0) acpiprt4 at acpi0: bus -1 (HVD2) acpiprt5 at acpi0: bus 4 (PEX0) acpiprt6 at acpi0: bus -1 (PEX4) acpiprt7 at acpi0: bus -1 (PEX5) acpiprt8 at acpi0: bus 5 (COMP) acpicpu0 at acpi0: !C3(350@96 mwait.1@0x20), !C2(500@64 mwait.1@0x10), C1(1000@1 mwait.1) acpicpu1 at acpi0: !C3(350@96 mwait.1@0x20), !C2(500@64 mwait.1@0x10), C1(1000@1 mwait.1) acpicpu2 at acpi0: !C3(350@96 mwait.1@0x20), !C2(500@64 mwait.1@0x10), C1(1000@1 mwait.1) acpicpu3 at acpi0: !C3(350@96 mwait.1@0x20), !C2(500@64 mwait.1@0x10), C1(1000@1 mwait.1) "PNP0C33" at acpi0 not configured "ACPI000D" at acpi0 not configured "PNP0501" at acpi0 not configured "PNP0501" at acpi0 not configured "IPI0001" at acpi0 not configured ipmi at mainbus0 not configured pci0 at mainbus0 bus 0 pchb0 at pci0 dev 0 function 0 "Intel Core DMI" rev 0x11 ppb0 at pci0 dev 3 function 0 "Intel Core PCIE" rev 0x11: msi pci1 at ppb0 bus 1 ppb1 at pci1 dev 0 function 0 "Intel 41210 PCIE-PCIX" rev 0x09 pci2 at ppb1 bus 2 em0 at pci2 dev 4 function 0 "Intel 82546EB" rev 0x03: apic 0 int 17, address 00:12:c0:08:39:ee em1 at pci2 dev 4 function 1 "Intel 82546EB" rev 0x03: apic 0 int 17, address 00:12:c0:08:39:ef ppb2 at pci1 dev 0 function 2 "Intel 41210 PCIE-PCIX" rev 0x09 pci3 at ppb2 bus 3 em2 at pci3 dev 4 function 0 "Intel 82546EB" rev 0x03: apic 0 int 17, address 00:12:c0:08:39:ec em3 at pci3 dev 4 function 1 "Intel 82546EB" rev 0x03: apic 0 int 17, address 00:12:c0:08:39:ed em4 at pci3 dev 5 function 0 "Intel 82546EB" rev 0x03: apic 0 int 18, address 00:12:c0:08:39:ea em5 at pci3 dev 5 function 1 "Intel 82546EB" rev 0x03: apic 0 int 18, address 00:12:c0:08:39:eb "Intel Core Management" rev 0x11 at pci0 dev 8 function 0 not configured "Intel Core Scratch" rev 0x11 at pci0 dev 8 function 1 not configured "Intel Core Control" rev 0x11 at pci0 dev 8 function 2 not configured "Intel Core Misc" rev 0x11 at pci0 dev 8 function 3 not configured "Intel Core QPI Link" rev 0x11 at pci0 dev 16 function 0 not configured "Intel Core QPI Routing" rev 0x11 at pci0 dev 16 function 1 not configured ehci0 at pci0 dev 26 function 0 "Intel 3400 USB" rev 0x05: apic 0 int 22 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 28 function 0 "Intel 3400 PCIE" rev 0x05 pci4 at ppb3 bus 4 bnx0 at pci4 dev 0 function 0 "Broadcom BCM5716" rev 0x20: apic 0 int 16 bnx1 at pci4 dev 0 function 1 "Broadcom BCM5716" rev 0x20: apic 0 int 17 ehci1 at pci0 dev 29 function 0 "Intel 3400 USB" rev 0x05: apic 0 int 22 usb1 at ehci1: USB revision 2.0 uhub1 at usb1 "Intel EHCI root hub" rev 2.00/1.00 addr 1 ppb4 at pci0 dev 30 function 0 "Intel 82801BA Hub-to-PCI" rev 0xa5 pci5 at ppb4 bus 5 vga1 at pci5 dev 3 function 0 "Matrox MGA G200eW" rev 0x0a wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation) wsdisplay0: screen 1-5 added (80x25, vt100 emulation) pcib0 at pci0 dev 31 function 0 "Intel 3420 LPC" rev 0x05 ahci0 at pci0 dev 31 function 2 "Intel 3400 AHCI" rev 0x05: msi, AHCI 1.3 ahci0: port 0: 3.0Gb/s scsibus1 at ahci0: 32 targets sd0 at scsibus1 targ 0 lun 0: <ATA, M4-CT064M4SSD2, 040H> SCSI3 0/direct fixed naa.500a0751031eb4a7 sd0: 61057MB, 512 bytes/sector, 125045424 sectors, thin isa0 at pcib0 isadma0 at isa0 com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo com0: console com1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo pckbc0 at isa0 port 0x60/5 irq 1 irq 12 pcppi0 at isa0 port 0x61 spkr0 at pcppi0 uhub2 at uhub0 port 1 "Intel Rate Matching Hub" rev 2.00/0.00 addr 2 uhub3 at uhub1 port 1 "Intel Rate Matching Hub" rev 2.00/0.00 addr 2 uhub4 at uhub3 port 5 "Standard Microsystems product 0x2514" rev 2.00/0.00 addr 3 vscsi0 at root scsibus2 at vscsi0: 256 targets softraid0 at root scsibus3 at softraid0: 256 targets