hexley
Dabbler
- Joined
- Sep 8, 2017
- Messages
- 11
Hi,
I would like to get networking working for a VM under FreeNAS 11.1-U2, starting with DHCP.
So far I've used only the FreeNAS GUI to create the following setup:
Router [DHCP server]
Switch [DHCP relay > LACP trunk]
FreeNAS [lagg0{igb0,igb1,igb2,igb3} > vlan74 > bridge1 > tap0]
VM [eth0]
It seems like the Router and Switch half of the setup are working, because a tcpdump on lagg0 reveals both the DHCP discover and returning offer:
But a tcpdump on vlan74 (or bridge1, tap0, eth0) shows the DHCP discover (plus some ICMPv6 chatter not shown), but no returning offer:
What I'm expecting is that vlan74 would receive the offer (since the packet is tagged 74) and that bridge1 would share the packet with tap0 and eventually eth0.
Hopefully I'm just missing something silly...
Thanks for your help.
I would like to get networking working for a VM under FreeNAS 11.1-U2, starting with DHCP.
So far I've used only the FreeNAS GUI to create the following setup:
Router [DHCP server]
Switch [DHCP relay > LACP trunk]
FreeNAS [lagg0{igb0,igb1,igb2,igb3} > vlan74 > bridge1 > tap0]
VM [eth0]
It seems like the Router and Switch half of the setup are working, because a tcpdump on lagg0 reveals both the DHCP discover and returning offer:
tcpdump -i lagg0 -env vlan 74
14:31:42.211581 00:a0:98:3f:60:a7 > ff:ff:ff:ff:ff:ff, ethertype 802.1Q (0x8100), length 346: vlan 74, p 0, ethertype IPv4, (tos 0x0, ttl 64, id 0, offset 0, flags [none], proto UDP (17), length 328)
0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 00:a0:98:3f:60:a7, length 300, xid 0x67ce440b, secs 3063, Flags [none]
Client-Ethernet-Address 00:a0:98:3f:60:a7
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Discover
Client-ID Option 61, length 7: ether 00:a0:98:3f:60:a7
MSZ Option 57, length 2: 576
Parameter-Request Option 55, length 7:
Subnet-Mask, Default-Gateway, Domain-Name-Server, Hostname
Domain-Name, BR, NTP
Vendor-Class Option 60, length 3: "d-i"
14:31:42.231221 98:f2:b3:65:19:be > 00:a0:98:3f:60:a7, ethertype 802.1Q (0x8100), length 357: vlan 74, p 0, ethertype IPv4, (tos 0x0, ttl 64, id 59652, offset 0, flags [none], proto UDP (17), length 339)
10.7.127.254.67 > 10.7.103.191.68: BOOTP/DHCP, Reply, length 311, hops 1, xid 0x67ce440b, secs 3063, Flags [none]
Your-IP 10.7.103.191
Server-IP 192.168.7.1
Gateway-IP 10.7.127.254
Client-Ethernet-Address 00:a0:98:3f:60:a7
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Offer
Server-ID Option 54, length 4: 192.168.7.1
Lease-Time Option 51, length 4: 900
RN Option 58, length 4: 450
RB Option 59, length 4: 787
Subnet-Mask Option 1, length 4: 255.255.224.0
BR Option 28, length 4: 10.7.127.255
Domain-Name-Server Option 6, length 4: 192.168.7.1
Domain-Name Option 15, length 11: "local.lan"
NTP Option 42, length 4: 192.168.7.1
Default-Gateway Option 3, length 4: 10.7.127.254
But a tcpdump on vlan74 (or bridge1, tap0, eth0) shows the DHCP discover (plus some ICMPv6 chatter not shown), but no returning offer:
tcpdump -i vlan74 -env
14:37:51.519823 00:a0:98:3f:60:a7 > ff:ff:ff:ff:ff:ff, ethertype IPv4 (0x0800), length 342: (tos 0x0, ttl 64, id 0, offset 0, flags [none], proto UDP (17), length 328)
0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request from 00:a0:98:3f:60:a7, length 300, xid 0x669bd1f, secs 376, Flags [none]
Client-Ethernet-Address 00:a0:98:3f:60:a7
Vendor-rfc1048 Extensions
Magic Cookie 0x63825363
DHCP-Message Option 53, length 1: Discover
Client-ID Option 61, length 7: ether 00:a0:98:3f:60:a7
MSZ Option 57, length 2: 576
Parameter-Request Option 55, length 7:
Subnet-Mask, Default-Gateway, Domain-Name-Server, Hostname
Domain-Name, BR, NTP
Vendor-Class Option 60, length 3: "d-i"
What I'm expecting is that vlan74 would receive the offer (since the packet is tagged 74) and that bridge1 would share the packet with tap0 and eventually eth0.
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:db:fc:48
hwaddr 0c:c4:7a:db:fc:48
nd6 options=9<PERFORMNUD,IFDISABLED>
media: Ethernet autoselect (1000baseT <full-duplex>)
status: active
igb1: 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:db:fc:48
hwaddr 0c:c4:7a:db:fc:49
nd6 options=9<PERFORMNUD,IFDISABLED>
media: Ethernet autoselect (1000baseT <full-duplex>)
status: active
igb2: 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:db:fc:48
hwaddr 0c:c4:7a:db:fc:4a
nd6 options=9<PERFORMNUD,IFDISABLED>
media: Ethernet autoselect (1000baseT <full-duplex>)
status: active
igb3: 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:db:fc:48
hwaddr 0c:c4:7a:db:fc:4b
nd6 options=9<PERFORMNUD,IFDISABLED>
media: Ethernet autoselect (1000baseT <full-duplex>)
status: active
lagg0: 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:db:fc:48
inet 192.168.7.7 netmask 0xffffff00 broadcast 192.168.7.255
nd6 options=9<PERFORMNUD,IFDISABLED>
media: Ethernet autoselect
status: active
groups: lagg
laggproto lacp lagghash l2,l3,l4
laggport: igb0 flags=1c<ACTIVE,COLLECTING,DISTRIBUTING>
laggport: igb1 flags=1c<ACTIVE,COLLECTING,DISTRIBUTING>
laggport: igb2 flags=1c<ACTIVE,COLLECTING,DISTRIBUTING>
laggport: igb3 flags=1c<ACTIVE,COLLECTING,DISTRIBUTING>
vlan74: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=200001<RXCSUM,RXCSUM_IPV6>
ether 0c:c4:7a:db:fc:48
nd6 options=9<PERFORMNUD,IFDISABLED>
media: Ethernet autoselect
status: active
vlan: 74 vlanpcp: 0 parent interface: lagg0
groups: vlan
bridge1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
ether 02:6b:66:2d:af:03
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: tap0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
ifmaxaddr 0 port 27 priority 128 path cost 2000000
member: vlan74 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP>
ifmaxaddr 0 port 7 priority 128 path cost 55
tap0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=80000<LINKSTATE>
ether 00:bd:18:70:af:00
hwaddr 00:bd:18:70:af:00
nd6 options=1<PERFORMNUD>
media: Ethernet autoselect
status: active
groups: tap
Hopefully I'm just missing something silly...
Thanks for your help.
Last edited: