https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=241785
Bug ID: 241785
Summary: [vlan][lagg] creating vlan over lagg causes flapping
Product: Base System
Version: 12.1-RELEASE
Hardware: amd64
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: b...@freebsd.org
Reporter: konrad.kreciw...@korbank.pl
Hello,
Starting of 12-STABLE (I do not know revision numer) up to 12.1-RELEASE I
notice a problem with vlans over laggport. I have INTEL 82599 (ix0, ix1) and
create a lagg(LACP):
root@:~ # ifconfig lagg0 create
root@:~ # ifconfig lagg0 laggproto lacp laggport ix0 laggport ix1
and vlans:
root@:~ # ifconfig vlan3960 create
root@:~ # ifconfig vlan3960 vlan 3960 vlandev lagg0
ifconfig output:
ix0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=e53fbb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,WOL_UCAST,WOL_MCAST,WOL_MAGIC,VLAN_HWFILTER,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6>
ether a0:36:9f:1d:db:4c
media: Ethernet autoselect (10Gbase-Twinax
<full-duplex,rxpause,txpause>)
status: active
nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
ix1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=e53fbb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,WOL_UCAST,WOL_MCAST,WOL_MAGIC,VLAN_HWFILTER,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6>
ether a0:36:9f:1d:db:4c
hwaddr a0:36:9f:1d:db:4e
media: Ethernet autoselect (10Gbase-Twinax
<full-duplex,rxpause,txpause>)
status: active
nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
options=680003<RXCSUM,TXCSUM,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6>
inet6 ::1 prefixlen 128
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x7
inet 127.0.0.1 netmask 0xff000000
groups: lo
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
lagg0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=e53fbb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,LRO,WOL_UCAST,WOL_MCAST,WOL_MAGIC,VLAN_HWFILTER,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6>
ether a0:36:9f:1d:db:4c
laggproto lacp lagghash l2,l3,l4
laggport: ix0 flags=1c<ACTIVE,COLLECTING,DISTRIBUTING>
laggport: ix1 flags=1c<ACTIVE,COLLECTING,DISTRIBUTING>
groups: lagg
media: Ethernet autoselect
status: active
nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
vlan3960: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=600703<RXCSUM,TXCSUM,TSO4,TSO6,LRO,RXCSUM_IPV6,TXCSUM_IPV6>
ether a0:36:9f:1d:db:4c
inet 212.127.xx.xx netmask 0xfffffffc broadcast 212.127.92.255
groups: vlan
vlan: 3960 vlanpcp: 0 parent interface: lagg0
media: Ethernet autoselect
status: active
nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
next, creating new vlan causes a port flapping (ix0,ix1 and whole lagg0):
root@:~ # ifconfig vlan100 create
root@:~ # ifconfig vlan100 vlan 100 vlandev lagg0
root@:~ # ifconfig vlan200 create
root@:~ # ifconfig vlan200 vlan 200 vlandev lagg0
dmesg output:
vlan3960: link state changed to UP
ix0: link state changed to DOWN
ix1: link state changed to DOWN
lagg0: link state changed to DOWN
vlan3960: link state changed to DOWN
vlan100: link state changed to DOWN
ix0: link state changed to UP
ix1: link state changed to UP
lagg0: link state changed to UP
vlan3960: link state changed to UP
vlan100: link state changed to UP
ix0: link state changed to DOWN
ix1: link state changed to DOWN
lagg0: link state changed to DOWN
vlan3960: link state changed to DOWN
vlan100: link state changed to DOWN
vlan200: link state changed to DOWN
ix0: link state changed to UP
ix1: link state changed to UP
lagg0: link state changed to UP
vlan3960: link state changed to UP
vlan100: link state changed to UP
vlan200: link state changed to UP
Its happend for example on 12.0-STABLE #0 r344658M, 12.1-RELEASE. I use a
diffrent hardware, only networkcard (based on INTEL 82599 chipset) is the same.
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