Code:
root@AlphaServer:~ # 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 ac:1f:6b:26:b9:96
		hwaddr ac:1f:6b:26:b9:96
		inet 192.168.2.10 netmask 0xffffff00 broadcast 192.168.2.255
		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 ac:1f:6b:26:b9:97
		hwaddr ac:1f:6b:26:b9:97
		nd6 options=9<PERFORMNUD,IFDISABLED>
		media: Ethernet autoselect (1000baseT <full-duplex>)
		status: active
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
		ether 02:f5:27:64:c2:00
		nd6 options=9<PERFORMNUD,IFDISABLED>
		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: tap1 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
				ifmaxaddr 0 port 7 priority 128 path cost 2000000
		member: epair0a flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
				ifmaxaddr 0 port 5 priority 128 path cost 2000
		member: tap0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
				ifmaxaddr 0 port 6 priority 128 path cost 2000000
		member: igb0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
				ifmaxaddr 0 port 1 priority 128 path cost 20000
tap0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
		options=80000<LINKSTATE>
		ether 00:bd:0c:30:fa:00
		hwaddr 00:bd:0c:30:fa:00
		nd6 options=1<PERFORMNUD>
		media: Ethernet autoselect
		status: active
		groups: tap
		Opened by PID 7193
epair0a: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
		options=8<VLAN_MTU>
		ether 02:ae:50:00:05:0a
		hwaddr 02:ae:50:00:05:0a
		nd6 options=1<PERFORMNUD>
		media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>)
		status: active
		groups: epair
tap1: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
		options=80000<LINKSTATE>
		ether 00:bd:a8:8a:de:01
		hwaddr 00:bd:a8:8a:de:01
		nd6 options=1<PERFORMNUD>
		media: Ethernet autoselect
		status: active
		groups: tap
		Opened by PID 49045
 
EDIT - Im now having the same issue with my RancherOS VM which used to be absolutely fine
EDIT 2 - RancherOS started working again after a full FreeNAS reboot, unsure whats causing this