VirtualBox and bridging lagg interface problem

Fri Aug 24 07:56:41 UTC 2018

Answering my own question ...

> Am 24.08.2018 um 09:02 schrieb Patrick M. Hausen <hausen at punkt.de>:
>> Am 24.08.2018 um 02:22 schrieb Josh Paetzel <josh at tcbug.org>:
>> Association to an AP is done via MAC address. There’s no way to alias IPs or bridge on a WiFi network.
>> What you are seeing is normal and expected. Can’t bridge VMs to WiFi.
> 
> Then how does VMware Fusion on my Mac do exactly this?
> 
> Interface of my Mac:
> 
> en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
> 	ether c8:e0:eb:16:81:df 
> 	inet6 fe80::46:11f:64b8:dac1%en0 prefixlen 64 secured scopeid 0x4 
> 	inet 217.29.44.49 netmask 0xffffff00 broadcast 217.29.44.255
> 	inet6 2a00:b580:a000::c32:58ac:7d3:aef4 prefixlen 64 autoconf secured 
> 	inet6 2a00:b580:a000::a94d:d5a4:1230:8aac prefixlen 64 autoconf temporary 
> 	nd6 options=201<PERFORMNUD,DAD>
> 	media: autoselect
> 	status: active
> 
> Interface of my VM:
> 
> vmx0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
> 	options=60039b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,TSO6,RXCSUM_IPV6,TXCSUM_IPV6>
> 	ether 00:0c:29:00:85:b8
> 	hwaddr 00:0c:29:00:85:b8
> 	inet 217.29.44.164 netmask 0xffffff00 broadcast 217.29.44.255 
> 	nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
> 	media: Ethernet autoselect
> 	status: active

It does proxy ARP:

$  ping 217.29.44.164
PING 217.29.44.164 (217.29.44.164): 56 data bytes
64 bytes from 217.29.44.164: icmp_seq=0 ttl=64 time=2.640 ms
^C
--- 217.29.44.164 ping statistics ---
1 packets transmitted, 1 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 2.640/2.640/2.640/0.000 ms
$ arp -a |grep !$
arp -a |grep 217.29.44.164
? (217.29.44.164) at c8:e0:eb:16:81:df on bge0 expires in 1143 seconds [ethernet]

Interesting. Didn't know that.

Patrick
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