On Wed, Sep 30, 2015 at 10:36:21AM +0200, Benny Lofgren wrote:
> > Thanks for your help,
> 
> I assume you are not able to ping the other way around either when the
> network goes down, i e from gamma to fritzbox?

Since everything in that part of the apartment is headless (fritzbox, gamma
and mercury) I haven't been able to attach anything in time before the 
disruption is over.  However thanks for pointing it out I'll attach a
netbook to its serial port and have it hibernate until the problem occurs
again.  I forgot to mention the problem is highly sporadic.

> Are you able to ping mercury from gamma? (But as I interpret your map
> they are not on the same network i/f on gamma so that might not provide
> much useful info.)

I'll try that out next time when I've set up the netbook.

> What happens if you do ifconfig re1 down / ifconfig re1 up on gamma when
> the fault have occured?

I'll have to try that out.

> Or if you unplug and then put the network cable back again?

Haven't tried that yet.

> In other words, how do you usually recover from the problem?

Usually I log into uranus from spica or a vm of spica and start pinging to
see if the fritzbox is available then i start a ping on gamma and notice it
will be down.  The vm of spica has a gif tunnel and IPSEC to mercury so that
is the first indication that nothing works.

I have in the past rebooted the fritzbox which solved the problem, but that 
stopped when I started mailing AVM.  The problem can take up to 5-10 minutes 
downtime which would be as much time as me getting out a netbook, booting it 
connecting it to gamma, logging in and doing network checks.

> Are there any clues in /var/log/messages that might be of interest?

Unfortnately not.

> Also, the usual first question on this list is: can you provide a full
> dmesg from gamma?
> It is almost always more helpful than people think, so never leave home
> without it! :-)
> 
> 
> Regards,
> 
> /Benny

Thanks for your effort Benny.  The dmesg follows...

-peter


OpenBSD 5.7 (GENERIC.MP) #2: Fri Jul 31 18:51:07 CEST 2015
    p...@gamma.virgostar.net:/usr/src/sys/arch/amd64/compile/GENERIC.MP
real mem = 2098520064 (2001MB)
avail mem = 2038796288 (1944MB)
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.7 @ 0x7e16d820 (7 entries)
bios0: vendor coreboot version "4.0" date 09/08/2014
bios0: PC Engines APU
acpi0 at bios0: rev 0
acpi0: sleep states S0 S1 S3 S4 S5
acpi0: tables DSDT FACP SPCR HPET APIC HEST SSDT SSDT SSDT
acpi0: wakeup devices AGPB(S4) HDMI(S4) PBR4(S4) PBR5(S4) PBR6(S4) PBR7(S4) 
PE20(S4) PE21(S4) PE22(S4) PE23(S4) PIBR(S4) UOH1(S3) UOH2(S3) UOH3(S3) 
UOH4(S3) UOH5(S3) [...]
acpitimer0 at acpi0: 3579545 Hz, 32 bits
acpihpet0 at acpi0: 14318180 Hz
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: AMD G-T40E Processor, 1000.15 MHz
cpu0: 
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT,SSE3,MWAIT,SSSE3,CX16,POPCNT,NXE,MMXX,FFXSR,PAGE1GB,LONG,LAHF,CMPLEG,SVM,EAPICSP,AMCR8,ABM,SSE4A,MASSE,3DNOWP,IBS,SKINIT,ITSC
cpu0: 32KB 64b/line 2-way I-cache, 32KB 64b/line 8-way D-cache, 512KB 64b/line 
16-way L2 cache
cpu0: 8 4MB entries fully associative
cpu0: DTLB 40 4KB entries fully associative, 8 4MB entries fully associative
cpu0: smt 0, core 0, package 0
mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges
cpu0: apic clock running at 200MHz
cpu0: mwait min=64, max=64, C-substates=0.0.0.0.0, IBE
cpu1 at mainbus0: apid 1 (application processor)
cpu1: AMD G-T40E Processor, 1000.01 MHz
cpu1: 
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,MMX,FXSR,SSE,SSE2,HTT,SSE3,MWAIT,SSSE3,CX16,POPCNT,NXE,MMXX,FFXSR,PAGE1GB,LONG,LAHF,CMPLEG,SVM,EAPICSP,AMCR8,ABM,SSE4A,MASSE,3DNOWP,IBS,SKINIT,ITSC
cpu1: 32KB 64b/line 2-way I-cache, 32KB 64b/line 8-way D-cache, 512KB 64b/line 
16-way L2 cache
cpu1: 8 4MB entries fully associative
cpu1: DTLB 40 4KB entries fully associative, 8 4MB entries fully associative
cpu1: smt 0, core 1, package 0
ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 21, 24 pins
acpiprt0 at acpi0: bus -1 (AGPB)
acpiprt1 at acpi0: bus -1 (HDMI)
acpiprt2 at acpi0: bus 1 (PBR4)
acpiprt3 at acpi0: bus 2 (PBR5)
acpiprt4 at acpi0: bus 3 (PBR6)
acpiprt5 at acpi0: bus -1 (PBR7)
acpiprt6 at acpi0: bus 5 (PE20)
acpiprt7 at acpi0: bus -1 (PE21)
acpiprt8 at acpi0: bus -1 (PE22)
acpiprt9 at acpi0: bus -1 (PE23)
acpiprt10 at acpi0: bus 0 (PCI0)
acpiprt11 at acpi0: bus 4 (PIBR)
acpicpu0 at acpi0: C2, PSS
acpicpu1 at acpi0: C2, PSS
acpibtn0 at acpi0: PWRB
cpu0: 1000 MHz: speeds: 1000 800 MHz
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 "AMD AMD64 14h Host" rev 0x00
ppb0 at pci0 dev 4 function 0 "AMD AMD64 14h PCIE" rev 0x00: msi
pci1 at ppb0 bus 1
re0 at pci1 dev 0 function 0 "Realtek 8168" rev 0x06: RTL8168E/8111E (0x2c00), 
msi, address 00:0d:b9:3d:bb:fc
rgephy0 at re0 phy 7: RTL8169S/8110S PHY, rev. 4
ppb1 at pci0 dev 5 function 0 "AMD AMD64 14h PCIE" rev 0x00: msi
pci2 at ppb1 bus 2
re1 at pci2 dev 0 function 0 "Realtek 8168" rev 0x06: RTL8168E/8111E (0x2c00), 
msi, address 00:0d:b9:3d:bb:fd
rgephy1 at re1 phy 7: RTL8169S/8110S PHY, rev. 4
ppb2 at pci0 dev 6 function 0 "AMD AMD64 14h PCIE" rev 0x00: msi
pci3 at ppb2 bus 3
re2 at pci3 dev 0 function 0 "Realtek 8168" rev 0x06: RTL8168E/8111E (0x2c00), 
msi, address 00:0d:b9:3d:bb:fe
rgephy2 at re2 phy 7: RTL8169S/8110S PHY, rev. 4
ahci0 at pci0 dev 17 function 0 "ATI SBx00 SATA" rev 0x40: apic 2 int 19, AHCI 
1.2
scsibus1 at ahci0: 32 targets
sd0 at scsibus1 targ 0 lun 0: <ATA, KINGSTON SMS200S, 600A> SCSI3 0/direct 
fixed naa.50026b72540502a5
sd0: 28626MB, 512 bytes/sector, 58626288 sectors, thin
ohci0 at pci0 dev 18 function 0 "ATI SB700 USB" rev 0x00: apic 2 int 18, 
version 1.0, legacy support
ehci0 at pci0 dev 18 function 2 "ATI SB700 USB2" rev 0x00: apic 2 int 17
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 "ATI EHCI root hub" rev 2.00/1.00 addr 1
ohci1 at pci0 dev 19 function 0 "ATI SB700 USB" rev 0x00: apic 2 int 18, 
version 1.0, legacy support
ehci1 at pci0 dev 19 function 2 "ATI SB700 USB2" rev 0x00: apic 2 int 17
usb1 at ehci1: USB revision 2.0
uhub1 at usb1 "ATI EHCI root hub" rev 2.00/1.00 addr 1
piixpm0 at pci0 dev 20 function 0 "ATI SBx00 SMBus" rev 0x42: polling
iic0 at piixpm0
pcib0 at pci0 dev 20 function 3 "ATI SB700 ISA" rev 0x40
ppb3 at pci0 dev 20 function 4 "ATI SB600 PCI" rev 0x40
pci4 at ppb3 bus 4
ohci2 at pci0 dev 20 function 5 "ATI SB700 USB" rev 0x00: apic 2 int 18, 
version 1.0, legacy support
ppb4 at pci0 dev 21 function 0 "ATI SB800 PCIE" rev 0x00
pci5 at ppb4 bus 5
ohci3 at pci0 dev 22 function 0 "ATI SB700 USB" rev 0x00: apic 2 int 18, 
version 1.0, legacy support
ehci2 at pci0 dev 22 function 2 "ATI SB700 USB2" rev 0x00: apic 2 int 17
usb2 at ehci2: USB revision 2.0
uhub2 at usb2 "ATI EHCI root hub" rev 2.00/1.00 addr 1
pchb1 at pci0 dev 24 function 0 "AMD AMD64 14h Link Cfg" rev 0x43
pchb2 at pci0 dev 24 function 1 "AMD AMD64 14h Address Map" rev 0x00
pchb3 at pci0 dev 24 function 2 "AMD AMD64 14h DRAM Cfg" rev 0x00
km0 at pci0 dev 24 function 3 "AMD AMD64 14h Misc Cfg" rev 0x00
pchb4 at pci0 dev 24 function 4 "AMD AMD64 14h CPU Power" rev 0x00
pchb5 at pci0 dev 24 function 5 "AMD AMD64 14h Reserved" rev 0x00
pchb6 at pci0 dev 24 function 6 "AMD AMD64 14h NB Power" rev 0x00
pchb7 at pci0 dev 24 function 7 "AMD AMD64 14h Reserved" rev 0x00
usb3 at ohci0: USB revision 1.0
uhub3 at usb3 "ATI OHCI root hub" rev 1.00/1.00 addr 1
usb4 at ohci1: USB revision 1.0
uhub4 at usb4 "ATI OHCI root hub" rev 1.00/1.00 addr 1
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
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
lpt0 at isa0 port 0x378/4 irq 7
wbsio0 at isa0 port 0x2e/2: NCT5104D rev 0x52
usb5 at ohci2: USB revision 1.0
uhub5 at usb5 "ATI OHCI root hub" rev 1.00/1.00 addr 1
usb6 at ohci3: USB revision 1.0
uhub6 at usb6 "ATI OHCI root hub" rev 1.00/1.00 addr 1
umass0 at uhub2 port 1 configuration 1 interface 0 "Generic Flash Card 
Reader/Writer" rev 2.01/1.00 addr 2
umass0: using SCSI over Bulk-Only
scsibus2 at umass0: 2 targets, initiator 0
sd1 at scsibus2 targ 1 lun 0: <Multiple, Card Reader, 1.00> SCSI2 0/direct 
removable serial.058f6366058F63666485
vscsi0 at root
scsibus3 at vscsi0: 256 targets
softraid0 at root
scsibus4 at softraid0: 256 targets
root on sd0a (75300c3cfa19f95d.a) swap on sd0b dump on sd0b
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it
pppoe0: host unique tag found, but it belongs to a connection in state 3
pppoe: received PADO but could not find request for it

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