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
> > 
> >  
> > 
> > 
> >   
> 
>