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. Van: FreeBSD User <[email protected]> Datum: vrijdag, 28 november 2025 08:26 Aan: FreeBSD CURRENT <[email protected]> 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
