Interfaces not coming up after booting in a random way in 25.7/26.1

[e-alfred]

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Describe the bug

I am running two identical firewalls with Intel XL710 and X550 network cards on Supermicro SYS-1024 chassis in an HA setup using CARP with multiple VLANs. After every reboot on different OpnSense versions from 25.7.9 to 26.1.3 I am encountering an issue that some interfaces (physical and VLAN) are not coming up randomly and I have to manually apply the settings in the web UI and without any configuration change they start up immediately. Some interfaces are up and online, but some are not. Because the interfaces are immediately up after applying the interface configuration in the Web UI, it seems like a problem only occuring at boot time. After applying the configuration, everything works perfectly.

To Reproduce

Run a CARP setup with two identical systems with multiple VLANs and reboot each node and the interfaces won't come up randomly.

Expected behavior

All interfaces should be up and running after each reboot without errors.

Describe alternatives you considered

I tried several fixes like ixl tunables, nothing changed, some interfaces still don't come up.

Screenshots

A partial list of the interfaces to show the problem after a reboot:

Relevant log files

2026-03-06T11:24:43
Error
opnsense
/usr/local/etc/rc.bootup: The command `/sbin/ifconfig -Lmv ' failed to execute (ixl0: flags=1028943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST,PPROMISC,LOWER_UP> metric 0 mtu 1500 \x09description: Management (lan) \x09options=4800028<VLAN_MTU,JUMBO_MTU,HWSTATS,MEXTPG> \x09capabilities=4f507bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,VLAN_HWFILTER,VLAN_HWTSO,NETMAP,RXCSUM_IPV6,TXCSUM_IPV6,HWSTATS,MEXTPG> \x09ether 7c:c2:55:27:86:2c \x09inet 10.60.0.3 netmask 0xffffff00 broadcast 10.60.0.255 \x09inet 10.60.0.1 netmask 0xffffff00 broadcast 10.60.0.255 vhid 5 \x09carp: BACKUP vhid 5 advbase 1 advskew 100 \x09 peer 224.0.0.18 peer6 ff02::12 \x09media: Ethernet autoselect (10Gbase-T <full-duplex>) \x09status: active \x09supported media: \x09\x09media autoselect \x09\x09media 10Gbase-T \x09\x09media 5000Base-T \x09\x09media 2500Base-T \x09\x09media 1000baseT \x09\x09media 100baseTX \x09nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> \x09drivername: ixl0 ixl1: flags=1008802<BROADCAST,SIMPLEX,MULTICAST,LOWER_UP> metric 0 mtu 1500 \x09options=4800028<VLAN_MTU,JUMBO_MTU,HWSTATS,MEXTPG> \x09capabilities=4f507bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,VLAN_HWFILTER,VLAN_HWTSO,NETMAP,RXCSUM_IPV6,TXCSUM_IPV6,HWSTATS,MEXTPG> \x09ether 7c:c2:55:27:86:2d \x09media: Ethernet autoselect (10Gbase-T <full-duplex>) \x09status: active \x09supported media: \x09\x09media autoselect \x09\x09media 10Gbase-T \x09\x09media 5000Base-T \x09\x09media 2500Base-T \x09\x09media 1000baseT \x09\x09media 100baseTX \x09nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> \x09drivername: ixl1 ixl2: flags=1008943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST,LOWER_UP> metric 0 mtu 1500 \x09options=4800028<VLAN_MTU,JUMBO_MTU,HWSTATS,MEXTPG> \x09capabilities=4f507bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,VLAN_HWFILTER,VLAN_HWTSO,NETMAP,RXCSUM_IPV6,TXCSUM_IPV6,HWSTATS,MEXTPG> \x09ether 3c:ec:ef:b8:0c:18 \x09media: Ethernet autoselect (40Gbase-CR4 <full-duplex>) \x09status: active \x09supported media: \x09\x09media autoselect \x09\x09media 40Gbase-CR4 \x09nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> \x09drivername: ixl2 \x09plugged: QSFP+ 40GBASE-CR4 (Copper pigtail) \x09vendor: FS PN: QSFP-40G-PC03 SN: C2510005857-1 DATE: 2025-10-07 \x09module temperature: 0.00 C voltage: 0.00 Volts \x09lane 1: RX power: 0.00 mW (-inf dBm) TX bias: 0.00 mA \x09lane 2: RX power: 0.00 mW (-inf dBm) TX bias: 0.00 mA \x09lane 3: RX power: 0.00 mW (-inf dBm) TX bias: 0.00 mA \x09lane 4: RX power: 0.00 mW (-inf dBm) TX bias: 0.00 mA ixl3: flags=1028943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST,PPROMISC,LOWER_UP> metric 0 mtu 1500 \x09description: WAN (wan) \x09options=4800028<VLAN_MTU,JUMBO_MTU,HWSTATS,MEXTPG> \x09capabilities=4f507bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,VLAN_HWFILTER,VLAN_HWTSO,NETMAP,RXCSUM_IPV6,TXCSUM_IPV6,HWSTATS,MEXTPG> \x09ether 3c:ec:ef:b8:0c:19 \x09inet 192.168.88.3 netmask 0xfffffff8 broadcast 192.168.88.7 \x09inet 122.33.44.2 netmask 0xffffffff broadcast 122.33.44.2 \x09inet 122.33.44.5 netmask 0xffffffff broadcast 122.33.44.5 vhid 1 \x09inet 122.33.44.6 netmask 0xffffffff broadcast 122.33.44.6 vhid 2 \x09inet 122.33.44.3 netmask 0xffffffff broadcast 122.33.44.3 vhid 3 \x09inet 192.168.88.4 netmask 0xfffffff8 broadcast 192.168.88.7 vhid 4 \x09inet 122.33.44.7 netmask 0xffffffff broadcast 122.33.44.7 vhid 14 \x09carp: BACKUP vhid 1 advbase 1 advskew 100 \x09 peer 224.0.0.18 peer6 ff02::12 \x09carp: BACKUP vhid 2 advbase 1 advskew 100 \x09 peer 224.0.0.18 peer6 ff02::12 \x09carp: BACKUP vhid 3 advbase 1 advskew 100 \x09 peer 224.0.0.18 peer6 ff02::12 \x09carp: BACKUP vhid 4 advbase 1 advskew 100 \x09 peer 224.0.0.18 peer6 ff02::12 \x09carp: BACKUP vhid 14 advbase 1 advskew 100 \x09 peer 224.0.0.18 peer6 ff02::12 \x09media: Ethernet autoselect (40Gbase-CR4 <full-duplex>) \x09status: active \x09supported media: \x09\x09media autoselect \x09\x09media 40Gbase-CR4 \x09nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> \x09drivername: ixl3 \x09plugged: QSFP+ 40GBASE-CR4 (No separable connector) \x09vendor: FS PN: QSFP-PC07 SN: C2301235310-1 DATE: 2023-01-29 \x09module temperature: 0.00 C voltage: 0.00 Volts \x09lane 1: RX power: 0.00 mW (-inf dBm) TX bias: 0.00 mA \x09lane 2: RX power: 0.00 mW (-inf dBm) TX bias: 0.00 mA \x09lane 3: RX power: 0.00 mW (-inf dBm) TX bias: 0.00 mA \x09lane 4: RX power: 0.00 mW (-inf dBm) TX bias: 0.00 mA lo0: flags=1008049<UP,LOOPBACK,RUNNING,MULTICAST,LOWER_UP> metric 0 mtu 16384 \x09options=680003<RXCSUM,TXCSUM,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6> \x09capabilities=680003<RXCSUM,TXCSUM,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6> \x09inet 127.0.0.1 netmask 0xff000000 \x09inet6 ::1 prefixlen 128 \x09inet6 fe80::1%lo0 prefixlen 64 scopeid 0x5 \x09groups: lo \x09nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL> \x09drivername: lo0 enc0: flags=0 metric 0 mtu 1536 \x09options=0 \x09capabilities=0 \x09groups: enc \x09nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> \x09drivername: enc0 pflog0: flags=0 metric 0 mtu 33152 \x09options=0 \x09capabilities=0 \x09groups: pflog \x09drivername: pflog0 pfsync0: flags=0 metric 0 mtu 1500 \x09options=0 \x09capabilities=0 \x09maxupd: 128 defer: off version: 1400 \x09syncok: 1 \x09groups: pfsync \x09drivername: pfsync0 vlan01: flags=1028943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST,PPROMISC,LOWER_UP> metric 0 mtu 1500 \x09description: DBResearchWebservicesInfrastructure (opt1) \x09options=4000000<MEXTPG> \x09capabilities=4600703<RXCSUM,TXCSUM,TSO4,TSO6,LRO,RXCSUM_IPV6,TXCSUM_IPV6,MEXTPG> \x09ether 3c:ec:ef:b8:0c:18 \x09inet 122.33.44.19 netmask 0xfffffff0 broadcast 122.33.44.31 \x09inet 122.33.44.17 netmask 0xfffffff0 broadcast 122.33.44.31 vhid 8 \x09groups: vlan AllVMNetworks \x09carp: BACKUP vhid 8 advbase 1 advskew 100 \x09 peer 224.0.0.18 peer6 ff02::12 \x09vlan: 2001 vlanproto: 802.1q vlanpcp: 0 parent interface: ixl2 \x09media: Ethernet autoselect (40Gbase-CR4 <full-duplex>) \x09status: active \x09supported media: \x09\x09media autoselect \x09nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> \x09drivername: vlan0 vlan02: flags=1028943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST,PPROMISC,LOWER_UP> metric 0 mtu 1500 \x09description: DBResearchResearchInfrastructure (opt2) \x09options=4000000<MEXTPG> \x09capabilities=4600703<RXCSUM,TXCSUM,TSO4,TSO6,LRO,RXCSUM_IPV6,TXCSUM_IPV6,MEXTPG> \x09ether 3c:ec:ef:b8:0c:18 \x09inet 122.33.44.35 netmask 0xfffffff0 broadcast 122.33.44.47 \x09inet 122.33.44.33 netmask 0xfffffff0 broadcast 122.33.44.47 vhid 9 \x09groups: vlan AllVMNetworks \x09carp: BACKUP vhid 9 advbase 1 advskew 100 \x09 peer 224.0.0.18 peer6 ff02::12 \x09vlan: 2002 vlanproto: 802.1q vlanpcp: 0 parent interface: ixl2 \x09media: Ethernet autoselect (40Gbase-CR4 <full-duplex>) \x09status: active \x09supported media: \x09\x09media autoselect \x09nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> \x09drivername: vlan1 vlan03: flags=1028943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST,PPROMISC,LOWER_UP> metric 0 mtu 1500 \x09description: DBResearchManagementSystems (opt3) \x09options=4000000<MEXTPG> \x09capabilities=4600703<RXCSUM,TXCSUM,TSO4,TSO6,LRO,RXCSUM_IPV6,TXCSUM_IPV6,MEXTPG> \x09ether 3c:ec:ef:b8:0c:18 \x09inet 122.33.44.51 netmask 0xfffffff0 broadcast 122.33.44.63 \x09inet 122.33.44.49 netmask 0xfffffff0 broadcast 122.33.44.63 vhid 10 \x09groups: vlan AllVMNetworks \x09carp: BACKUP vhid 10 advbase 1 advskew 100 \x09 peer 224.0.0.18 peer6 ff02::12 \x09vlan: 2003 vlanproto: 802.1q vlanpcp: 0 parent interface: ixl2 \x09media: Ethernet autoselect (40Gbase-CR4 <full-duplex>) \x09status: active \x09supported media: \x09\x09media autoselect \x09nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> \x09drivername: vlan2 vlan04: flags=1028943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST,PPROMISC,LOWER_UP> metric 0 mtu 1500 \x09description: testint (opt4) \x09options=4000000<MEXT
2026-03-06T11:24:38
Error
opnsense
/usr/local/etc/rc.bootup: Unable to configure nonexistent interface opt11 (ixl1)

Additional context

The problem did not appear with a single firewall without HA. After adding the second one with all the CARP interfaces, it started to appear. Both systems are configured exactly identical hard- and software-wise.

Environment

Software version used and hardware type if relevant, e.g.:

OPNsense 26.1.3-amd64
Supermicro AS -1024US-TRT
Intel® XL710 and X550

[e-alfred]

@fichtner Is this really an upstream bug? It seems like the bootup script fails to parse the output correctly, after applying the configuration of the interfaces (nothing else) everything works perfectly. This problem also arises with random VLANs, some VLANs are up, but one or two don't get their IP applied.

[e-alfred]

On another reboot a VLAN did not come up:

2026-03-06T11:02:33 Error opnsense /usr/local/etc/rc.bootup: Unable to configure nonexistent interface opt7 (vlan06)

[e-alfred]

If I run /usr/local/etc/rc.bootup after a reboot manually, everything works as expected, so this is definitely not an upstream bug.

[fichtner]

Unable to configure nonexistent interface opt11 (ixl1)

This is pretty funky, because it means ixl1 did not report to ifconfig or the whole system hang while reading ifconfig... which points to the driver.

I'm happy to re-assign this but not without further evidence. I haven't seen this behaviour before anywhere.

Cheers,
Franco

[e-alfred]

After another reboot, a VLAN interface and ixl0 wasn't running, but ixl1 works. It happens completely random with different interfaces.

2026-03-06T14:42:05 Error opnsense /usr/local/etc/rc.bootup: Unable to configure nonexistent interface opt6 (vlan05)

[fichtner]

The boot sequence isn’t non-deterministic. That’s why I still suspect OS or HW to interfere.

Cheers,
Franco

[e-alfred]

Before switching to a HA setup with CARP, this problem did not appear on a single system without any hardware changes. Only after switching everything to CARP VIPs, this problem started to appear on each system.

Is it possible to determine why /sbin/ifconfig -Lmv fails at this stage? As a workaround I run /usr/local/etc/rc.bootup after a boot once again after everything started up (except for some interfaces), and then all interfaces are set up correctly.

[fichtner]

First things first: how many CARP VIPs do you have and how many do you need? You can also have aliases with VHID. Reducing the number of addresses participating in CARP directly may be beneficial.

Cheers,
Franco