I'm a little bit stumped.
My FreeNAS logs are littered with:
freenas kernel: arp: ce:c0:9f:c5:9a:b1 attempts to modify permanent entry for 10.0.1.1 on epair2b
So some background:
I'm running pfSense (router software) within a VM on xcp-ng. The MAC address of ce:c0:9f:c5:9a:b1 corresponds to the MAC address of the pfSense router (virtualized). Within the routing table within pfsense I have the following:
LAN 10.0.1.1 ce:c0:9f:c5:9a:b1 Permanent ethernet
So why is FreeNAS complaining about this?
How do I find what is trying to communicate on epair2b?
Within FreeNAS I have the following:
# ifconfig
igb0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=2400b9<RXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,VLAN_HWTSO,RXCSUM_IPV6>
ether 0c:c4:7a:84:a5:94
hwaddr 0c:c4:7a:84:a5:94
inet 10.0.1.197 netmask 0xffffff00 broadcast 10.0.1.255
nd6 options=9<PERFORMNUD,IFDISABLED>
media: Ethernet autoselect (1000baseT <full-duplex>)
status: active
igb1: flags=8c02<BROADCAST,OACTIVE,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=6403bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6>
ether 0c:c4:7a:84:a5:95
hwaddr 0c:c4:7a:84:a5:95
nd6 options=9<PERFORMNUD,IFDISABLED>
media: Ethernet autoselect
status: no carrier
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6>
inet6 ::1 prefixlen 128
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3
inet 127.0.0.1 netmask 0xff000000
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
groups: lo
bridge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
description: iohyve-bridge-igb0
ether 02:f6:c7:64:02:00
nd6 options=1<PERFORMNUD>
groups: bridge
id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15
maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200
root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0
member: vnet0:7 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
ifmaxaddr 0 port 12 priority 128 path cost 2000
member: vnet0:6 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
ifmaxaddr 0 port 11 priority 128 path cost 2000
member: vnet0:4 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
ifmaxaddr 0 port 10 priority 128 path cost 2000
member: tap0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
ifmaxaddr 0 port 9 priority 128 path cost 2000000
member: epair2a flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
ifmaxaddr 0 port 8 priority 128 path cost 2000
member: epair1a flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
ifmaxaddr 0 port 7 priority 128 path cost 2000
member: epair0a flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
ifmaxaddr 0 port 6 priority 128 path cost 2000
member: tap1 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
ifmaxaddr 0 port 5 priority 128 path cost 2000000
member: igb0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
ifmaxaddr 0 port 1 priority 128 path cost 20000
tap1: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
description: iohyve-arch-on-FreeNAS--
options=80000<LINKSTATE>
ether 00:bd:8d:56:f8:01
hwaddr 00:bd:8d:56:f8:01
nd6 options=1<PERFORMNUD>
media: Ethernet autoselect
status: active
groups: tap
Opened by PID 3915
epair0a: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=8<VLAN_MTU>
ether 02:a8:d0:00:06:0a
hwaddr 02:a8:d0:00:06:0a
nd6 options=1<PERFORMNUD>
media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>)
status: active
groups: epair
epair1a: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=8<VLAN_MTU>
ether 02:a8:d0:00:07:0a
hwaddr 02:a8:d0:00:07:0a
nd6 options=1<PERFORMNUD>
media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>)
status: active
groups: epair
epair2a: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=8<VLAN_MTU>
ether 02:a8:d0:00:08:0a
hwaddr 02:a8:d0:00:08:0a
nd6 options=1<PERFORMNUD>
media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>)
status: active
groups: epair
tap0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
description: Attached to UbuntuMC
options=80000<LINKSTATE>
ether 00:bd:52:cc:f8:00
hwaddr 00:bd:52:cc:f8:00
nd6 options=1<PERFORMNUD>
media: Ethernet autoselect
status: active
groups: tap
Opened by PID 8225
vnet0:4: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
description: associated with jail: mineos as nic: epair0b
options=8<VLAN_MTU>
ether 02:ff:60:c5:1d:5f
hwaddr 02:a8:d0:00:0a:0a
nd6 options=1<PERFORMNUD>
media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>)
status: active
groups: epair
vnet0:6: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
description: associated with jail: nextcloud as nic: epair0b
options=8<VLAN_MTU>
ether 02:ff:60:ba:b5:81
hwaddr 02:a8:d0:00:0b:0a
nd6 options=1<PERFORMNUD>
media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>)
status: active
groups: epair
vnet0:7: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
description: associated with jail: Borg as nic: epair0b
options=8<VLAN_MTU>
ether 02:ff:60:4f:ca:3f
hwaddr 02:a8:d0:00:0c:0a
nd6 options=1<PERFORMNUD>
media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>)
status: active
groups: epair
My FreeNAS logs are littered with:
freenas kernel: arp: ce:c0:9f:c5:9a:b1 attempts to modify permanent entry for 10.0.1.1 on epair2b
So some background:
I'm running pfSense (router software) within a VM on xcp-ng. The MAC address of ce:c0:9f:c5:9a:b1 corresponds to the MAC address of the pfSense router (virtualized). Within the routing table within pfsense I have the following:
LAN 10.0.1.1 ce:c0:9f:c5:9a:b1 Permanent ethernet
So why is FreeNAS complaining about this?
How do I find what is trying to communicate on epair2b?
Within FreeNAS I have the following:
# ifconfig
igb0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=2400b9<RXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,VLAN_HWTSO,RXCSUM_IPV6>
ether 0c:c4:7a:84:a5:94
hwaddr 0c:c4:7a:84:a5:94
inet 10.0.1.197 netmask 0xffffff00 broadcast 10.0.1.255
nd6 options=9<PERFORMNUD,IFDISABLED>
media: Ethernet autoselect (1000baseT <full-duplex>)
status: active
igb1: flags=8c02<BROADCAST,OACTIVE,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=6403bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6>
ether 0c:c4:7a:84:a5:95
hwaddr 0c:c4:7a:84:a5:95
nd6 options=9<PERFORMNUD,IFDISABLED>
media: Ethernet autoselect
status: no carrier
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6>
inet6 ::1 prefixlen 128
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3
inet 127.0.0.1 netmask 0xff000000
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
groups: lo
bridge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
description: iohyve-bridge-igb0
ether 02:f6:c7:64:02:00
nd6 options=1<PERFORMNUD>
groups: bridge
id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15
maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200
root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0
member: vnet0:7 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
ifmaxaddr 0 port 12 priority 128 path cost 2000
member: vnet0:6 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
ifmaxaddr 0 port 11 priority 128 path cost 2000
member: vnet0:4 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
ifmaxaddr 0 port 10 priority 128 path cost 2000
member: tap0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
ifmaxaddr 0 port 9 priority 128 path cost 2000000
member: epair2a flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
ifmaxaddr 0 port 8 priority 128 path cost 2000
member: epair1a flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
ifmaxaddr 0 port 7 priority 128 path cost 2000
member: epair0a flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
ifmaxaddr 0 port 6 priority 128 path cost 2000
member: tap1 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
ifmaxaddr 0 port 5 priority 128 path cost 2000000
member: igb0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
ifmaxaddr 0 port 1 priority 128 path cost 20000
tap1: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
description: iohyve-arch-on-FreeNAS--
options=80000<LINKSTATE>
ether 00:bd:8d:56:f8:01
hwaddr 00:bd:8d:56:f8:01
nd6 options=1<PERFORMNUD>
media: Ethernet autoselect
status: active
groups: tap
Opened by PID 3915
epair0a: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=8<VLAN_MTU>
ether 02:a8:d0:00:06:0a
hwaddr 02:a8:d0:00:06:0a
nd6 options=1<PERFORMNUD>
media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>)
status: active
groups: epair
epair1a: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=8<VLAN_MTU>
ether 02:a8:d0:00:07:0a
hwaddr 02:a8:d0:00:07:0a
nd6 options=1<PERFORMNUD>
media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>)
status: active
groups: epair
epair2a: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=8<VLAN_MTU>
ether 02:a8:d0:00:08:0a
hwaddr 02:a8:d0:00:08:0a
nd6 options=1<PERFORMNUD>
media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>)
status: active
groups: epair
tap0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
description: Attached to UbuntuMC
options=80000<LINKSTATE>
ether 00:bd:52:cc:f8:00
hwaddr 00:bd:52:cc:f8:00
nd6 options=1<PERFORMNUD>
media: Ethernet autoselect
status: active
groups: tap
Opened by PID 8225
vnet0:4: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
description: associated with jail: mineos as nic: epair0b
options=8<VLAN_MTU>
ether 02:ff:60:c5:1d:5f
hwaddr 02:a8:d0:00:0a:0a
nd6 options=1<PERFORMNUD>
media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>)
status: active
groups: epair
vnet0:6: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
description: associated with jail: nextcloud as nic: epair0b
options=8<VLAN_MTU>
ether 02:ff:60:ba:b5:81
hwaddr 02:a8:d0:00:0b:0a
nd6 options=1<PERFORMNUD>
media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>)
status: active
groups: epair
vnet0:7: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
description: associated with jail: Borg as nic: epair0b
options=8<VLAN_MTU>
ether 02:ff:60:4f:ca:3f
hwaddr 02:a8:d0:00:0c:0a
nd6 options=1<PERFORMNUD>
media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>)
status: active
groups: epair
Last edited: