On Wed, May 10, 2023 at 08:56:10PM +1000, David Diggles wrote:
> dhcpleasectl -l cnmac2
>
> cnmac2 [Bound]
> inet x.x.x.x netmask x.x.x.x
> default gateway x.x.x.1
> nameservers x.x.x.x x.x.x.x
> lease 6 minutes
> dhcp server x.x.x.1
>
> I've gone on to try isc-dhcp-client from ports and it gets exactly the same
> problem.
>
> It's almost as though I have an arch issue - I've tried on another identical
> device
> with identical install - same problem.
>
> I've tried plugging in with Apple Airport Extreme (NetBSD 4.0 ARM) does not
> have the problem.
> I've tried plugging in with Linux/NetworkManger - does not have the problem.
>
> I might try swapping the egress interface from cnmac2 to cnmac1,cnmac0 and
> try my luck there.
You might find better luck by following Stuart's directions: collect
logging information and packet dumps. That will allow developers to
see what is going on, very likely.
-Otto
>
> [ using 762392 bytes of bsd ELF symbol table ]
> Copyright (c) 1982, 1986, 1989, 1991, 1993
> The Regents of the University of California. All rights reserved.
> Copyright (c) 1995-2023 OpenBSD. All rights reserved. https://www.OpenBSD.org
>
> OpenBSD 7.3 (GENERIC.MP) #1242: Sat Mar 25 18:04:31 MDT 2023
> dera...@octeon.openbsd.org:/usr/src/sys/arch/octeon/compile/GENERIC.MP
> real mem = 536870912 (512MB)
> avail mem = 521093120 (496MB)
> random: good seed from bootblocks
> mainbus0 at root: board 20002 rev 2.12, model CN3xxx/CN5xxx
> cpu0 at mainbus0: CN50xx CPU rev 0.1 500 MHz, Software FP emulation
> cpu0: cache L1-I 32KB 4 way D 16KB 64 way, L2 128KB 8 way
> cpu1 at mainbus0: CN50xx CPU rev 0.1 500 MHz, Software FP emulation
> cpu1: cache L1-I 32KB 4 way D 16KB 64 way, L2 128KB 8 way
> clock0 at mainbus0: int 5
> octcrypto0 at mainbus0
> iobus0 at mainbus0
> simplebus0 at iobus0: "soc"
> octciu0 at simplebus0
> octsmi0 at simplebus0
> octpip0 at simplebus0
> octgmx0 at octpip0 interface 0
> cnmac0 at octgmx0: port 0 RGMII, address dc:9f:db:28:14:bd
> atphy0 at cnmac0 phy 7: AR8035 10/100/1000 PHY, rev. 2
> cnmac1 at octgmx0: port 1 RGMII, address dc:9f:db:28:14:be
> atphy1 at cnmac1 phy 6: AR8035 10/100/1000 PHY, rev. 2
> cnmac2 at octgmx0: port 2 RGMII, address dc:9f:db:28:14:bf
> atphy2 at cnmac2 phy 5: AR8035 10/100/1000 PHY, rev. 2
> com0 at simplebus0: ns16550a, 64 byte fifo
> com0: console
> dwctwo0 at iobus0 base 0x1180068000000 irq 56
> usb0 at dwctwo0: USB revision 2.0
> uhub0 at usb0 configuration 1 interface 0 "Octeon DWC2 root hub" rev
> 2.00/1.00 addr 1
> octrng0 at iobus0 base 0x1400000000000 irq 0
> umass0 at uhub0 port 1 configuration 1 interface 0 "Imation Atom USB Device"
> rev 2.00/1.00 addr 2
> umass0: using SCSI over Bulk-Only
> scsibus0 at umass0: 2 targets, initiator 0
> sd0 at scsibus0 targ 1 lun 0: <Imation, Atom USB Device, PMAP> removable
> serial.071805340503380BB56D
> sd0: 7644MB, 512 bytes/sector, 15654912 sectors
> vscsi0 at root
> scsibus1 at vscsi0: 256 targets
> softraid0 at root
> scsibus2 at softraid0: 256 targets
> root on sd0a (1e748e9c1a25cfa3.a) swap on sd0b dump on sd0b
>
> On Wed, May 10, 2023 at 08:09:17AM +0200, Mike Fischer wrote:
> > What does `# dhcpleasectl -l cnmac2` output on the machine you are using?
> >
> > Mine (OpenBSD 7.3 amd64 vm on the LAN) looks like this (anonymised):
> > root@vm2:~# dhcpleasectl -l vio0
> > vio0 [Bound]
> > inet 192.168.x.220 netmask 255.255.255.0
> > default gateway 192.168.x.1
> > nameservers 192.168.x.1
> > lease 24 hours <==== what is your lease time?
> > dhcp server 192.168.x.1
> > root@vm2:~#
> >
> > I suspect your lease time is much higher than 5 min. An ISP issuing leases
> > as short as 5 min. would be highly unusual.
> >
> > You could try running dhcpleased manually like this to see details about
> > what is going on:
> > # dhcpleased -vv -d
> >
> > (But you???d need to stop the processes started by rc(8) first. E.g.: `#
> > rcctl stop dhcpleased`. Don???t forget to `# rcctl start dhcpleased` when
> > you are done with the testing.)
> >
> >
> > Does the interface go down and up for some reason every 5 minutes? That
> > might cause dhcpleased(8) to renew the lease.
> >
> >
> > HTH
> > Mike
> >
> > > Am 10.05.2023 um 07:28 schrieb Otto Moerbeek <o...@drijf.net>:
> > >
> > > On Wed, May 10, 2023 at 01:17:05PM +1000, David Diggles wrote:
> > >
> > >>
> > >> Just to update, I've added the following to dhclient.conf but
> > >> it's still renewing every 5 minutes (approximately) and the
> > >> default route is disappearing for a couple of seconds. :(
> > >>
> > >> send dhcp-lease-time 86400;
> > >
> > > dhcpleased does not use dhclient.conf, it used dhcpleased.conf, which
> > > does not have a way to influence the lease time requested (if that is a
> > > thing).
> > >
> > > -Otto
> > >>
> > >> On Wed, May 10, 2023 at 01:00:00PM +1000, David Diggles wrote:
> > >>> My ISP provides connection via DHCP.
> > >>>
> > >>> Every 5 minutes or so when dhcpleased is renewing the lease,
> > >>> my default route disappears for a few seconds.
> > >>>
> > >>> Definitely I'll be looking at requesting a longer lease by
> > >>> putting a setting in /etc/dhclient.conf but is there any way
> > >>> I can stop the default route disappearing with each renew event?
> > >>>
> > >>> The route didn't disappear when I tested with NetBSD and Linux.
> > >>>
> > >>> This seems like I'm missing a setting in dhclient.conf to make
> > >>> the default route sticky? I can't see any obvious answers in
> > >>> the man page for dhclient.conf unfortunately.
> > >>>
> > >>> (IP fudged log snippet below)
> > >>>
> > >>> May 10 12:23:21 openbsd-gateway dhcpleased[77979]: deleting nameservers
> > >>> x.x.x.x x.x.x.x (lease from x.x.x.1 on cnmac2)
> > >>> May 10 12:23:21 openbsd-gateway dhcpleased[77979]: deleting x.x.x.30
> > >>> from cnmac2 (lease from x.x.x.1)
> > >>> May 10 12:23:23 openbsd-gateway dhcpleased[77979]: adding x.x.x.30 to
> > >>> cnmac2 (lease from x.x.x.1)
> > >>> May 10 12:23:23 openbsd-gateway dhcpleased[77979]: adding nameservers
> > >>> x.x.x.x x.x.x.x (lease from x.x.x.1 on cnmac2)
> > >>> May 10 12:28:23 openbsd-gateway dhcpleased[77979]: deleting nameservers
> > >>> x.x.x.x x.x.x.x (lease from x.x.x.1 on cnmac2)
> > >>> May 10 12:28:23 openbsd-gateway dhcpleased[77979]: deleting x.x.x.30
> > >>> from cnmac2 (lease from x.x.x.1)
> > >>> May 10 12:28:25 openbsd-gateway dhcpleased[77979]: adding x.x.x.30 to
> > >>> cnmac2 (lease from x.x.x.1)
> > >>> May 10 12:28:25 openbsd-gateway dhcpleased[77979]: adding nameservers
> > >>> x.x.x.x x.x.x.x (lease from x.x.x.1 on cnmac2)
> > >>> May 10 12:33:26 openbsd-gateway dhcpleased[77979]: deleting nameservers
> > >>> x.x.x.x x.x.x.x (lease from x.x.x.1 on cnmac2)
> > >>> May 10 12:33:26 openbsd-gateway dhcpleased[77979]: deleting x.x.x.30
> > >>> from cnmac2 (lease from x.x.x.1)
> > >>> May 10 12:33:28 openbsd-gateway dhcpleased[77979]: adding x.x.x.30 to
> > >>> cnmac2 (lease from x.x.x.1)
> > >>> May 10 12:33:28 openbsd-gateway dhcpleased[77979]: adding nameservers
> > >>> x.x.x.x x.x.x.x (lease from x.x.x.1 on cnmac2)
> > >>> May 10 12:38:28 openbsd-gateway dhcpleased[77979]: deleting nameservers
> > >>> x.x.x.x x.x.x.x (lease from x.x.x.1 on cnmac2)
> > >>> May 10 12:38:28 openbsd-gateway dhcpleased[77979]: deleting x.x.x.30
> > >>> from cnmac2 (lease from x.x.x.1)
> > >>> May 10 12:38:30 openbsd-gateway dhcpleased[77979]: adding x.x.x.30 to
> > >>> cnmac2 (lease from x.x.x.1)
> > >>> May 10 12:38:30 openbsd-gateway dhcpleased[77979]: adding nameservers
> > >>> x.x.x.x x.x.x.x (lease from x.x.x.1 on cnmac2)
> > >>>
> > >>
> >
> > --
> > Mike Fischer
> > fisc...@lavielle.com
> >
>
