Re: 15-STABLE: dhclient fails on em0 (Lenovo T580)

Am Tage des Herren Mon, 1 Dec 2025 13:46:45 +0100 (CET)
Ronald Klop <ronald-lists@klop.ws> schrieb:

> Thanks,
> 
> Something I notice:
> Nov 29 11:36:00 <14.6> hermann kernel: sysctl: oid 'net.inet.ip.fw.default_to_accept' is a
> read only tunable at line 98 This setting needs to go in /boot/loader.conf, not in
> /etc/sysctl.conf.

I wouldn't care.
First I put the line into /etc/sysctl.conf.local, until I realized that the OID is read only
at the time sysctl.conf.local is read and the OID has to be placed in
/boot/loader/conf[.local]. There it is now/there it was until now. It doe not have any effect.

> 
> A bigger thing is that in the output you sent me I don't see dhclient being started.
> Are you sure your /etc/rc.conf is correct? Can you send your /etc/rc.conf?

rc.conf is attached.

A side note: apart from my initial note I made (I believe): I use a customized kernel. To
avoid further requests slowing down the evaluation whether my problem is a bug or a stupid
misconfiguration or unwanted sideeffect, I'll attach my kernel config files also. GENERIC is a
link to GENERIC in /usr/src/sys/amd64/conf.

Kind regards,
oh
> 
> Regards,
> Ronald.
> 
>  
> Van: FreeBSD User <freebsd@walstatt-de.de>
> Datum: zaterdag, 29 november 2025 12:24
> Aan: Ronald Klop <ronald-lists@klop.ws>
> CC: FreeBSD CURRENT <freebsd-current@freebsd.org>
> Onderwerp: Re: 15-STABLE: dhclient fails on em0 (Lenovo T580)
> > 
> > On Fri, 28 Nov 2025 10:56:08 +0100 (CET)
> > Ronald Klop <ronald-lists@klop.ws> wrote:
> >   
> > > Ok.
> > >
> > > Can you copy paste the console output of the booting system up until the login prompt?
> > > Or setup /var/log/console.log via /etc/syslog.conf and share that output.  
> > 
> > Please find the requested output of syslog (set to console.debug) attached as well as a
> > /var/log/message extract.  
> > >
> > > Regards,
> > > Ronald.
> > >
> > >  
> > > Van: FreeBSD User <freebsd@walstatt-de.de>
> > > Datum: vrijdag, 28 november 2025 10:50
> > > Aan: Ronald Klop <ronald-lists@klop.ws>
> > > CC: FreeBSD CURRENT <freebsd-current@freebsd.org>
> > > Onderwerp: Re: 15-STABLE: dhclient fails on em0 (Lenovo T580)  
> > > >
> > > > On Fri, 28 Nov 2025 10:16:15 +0100 (CET)
> > > > Ronald Klop <ronald-lists@klop.ws> wrote:
> > > >     
> > > > > It might be a typo in your mail, but it might also be the cause of your issue.
> > > > > This config needs to be in /etc/rc.conf, not in /etc/src.conf as you state in your
> > > > > mail.
> > > > >
> > > > > Regards,
> > > > > Ronald.    
> > > >
> > > > Sorry, a typo.
> > > >      
> > > > >
> > > > >  
> > > > > Van: FreeBSD User <freebsd@walstatt-de.de>
> > > > > Datum: vrijdag, 28 november 2025 08:26
> > > > > Aan: FreeBSD CURRENT <freebsd-current@freebsd.org>
> > > > > Onderwerp: 15-STABLE: dhclient fails on em0 (Lenovo T580)    
> > > > > >
> > > > > > I recently switched from FreeBSD 14-STABLE to 15-STABLE (after branching of
> > > > > > 16-CURRENT) on my working laptop, physically a Lenovo T580. Its LAN NIC FreeBSD
> > > > > > recognizes as em0 (see below). System is at: 15.0-STABLE #16
> > > > > > stable/15-n281349-b903f27e171b: Fri Nov 28 05:20:32 CET 2025 amd64. Kernel config:
> > > > > > GENERIC. Configuration has been setup and renewed acording to changes, consider
> > > > > > the system as a fresh install.
> > > > > >
> > > > > > Problem: em0 never gets an IPv4 via DHCP on startup (init process via rc.conf).
> > > > > >
> > > > > > Configured in /etc/src.conf:
> > > > > > [... WORKAROUND ...]
> > > > > > netwait_enable="NO"
> > > > > > netwait_if="em0"
> > > > > > [...]
> > > > > >
> > > > > > and on a regular basis:
> > > > > > [...]
> > > > > > ifconfig_em0="DHCP"
> > > > > > ifconfig_em0_ipv6="inet6 accept_rtadv -ifdisabled nud -no_radr auto_linklocal"
> > > > > > [...]
> > > > > >
> > > > > > Very strange: after a final boot up, its very easy to require and achive an IPv4
> > > > > > with
> > > > > >
> > > > > > dhclient em0
> > > > > >
> > > > > > I'm out of ideas ...
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > ====
> > > > > > pciconf:
> > > > > > [...]
> > > > > > em0@pci0:0:31:6:        class=0x020000 rev=0x21 hdr=0x00 vendor=0x8086
> > > > > > device=0x15d8 subvendor=0x17aa subdevice=0x225a vendor     = 'Intel Corporation'
> > > > > >     device     = 'Ethernet Connection (4) I219-V'
> > > > > >     class      = network
> > > > > >     subclass   = ethernet
> > > > > >     bar   [10] = type Memory, range 32, base 0xe8200000, size 131072, enabled
> > > > > >     cap 01[c8] = powerspec 3  supports D0 D3  current D0
> > > > > >     cap 05[d0] = MSI supports 1 message, 64 bit enabled with 1 message
> > > > > >     cap 13[e0] = PCI Advanced Features: FLR TP
> > > > > >
> > > > > > [...]
> > > > > >
> > > > > > dmesg:
> > > > > > ichsmb0: <Intel Sunrise Point-LP SMBus controller> port 0xefa0-0xefbf mem
> > > > > > 0xe8253000-0xe82530ff at device 31.4 on pci0 em0: <Intel(R) I219-V SPT(4)> mem
> > > > > > 0xe8200000-0xe821ffff at device 31.6 on pci0 em0: EEPROM V0.1-3
> > > > > > em0: Using 1024 TX descriptors and 1024 RX descriptors
> > > > > > em0: Using an MSI interrupt
> > > > > > em0: Ethernet address: 48:2a:e3:3a:cf:52
> > > > > > em0: netmap queues/slots: TX 1/1024, RX 1/1024
> > > > > >
> > > > > >  
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> > > > >      
> > > >  
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> > > >
> > > >     
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> > >    
> >  
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> > 
> >    
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>  



-- 

A FreeBSD user