Networking issues

ickler at gmail.com ickler at gmail.com
Fri Feb 7 20:03:20 UTC 2014


Hello virtualization-lovers,

I am very dedicated to FreeBSD since 7.2 and welcome the new bhyve
hypervisor. :)

So I set everything up, launched the guest and set up the network. The
problem now is, I can reach the host IP, but not the default gateway. Did I
forget to set something up?
The system is a hosted root box.

My current setup (i changed the IP's except the last octet):
---snip---
host:
# ifconfig
re0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0
mtu 1500

options=82099<RXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC,LINKSTATE>
        ether 30:85:a9:ed:01:22
        inet 192.168.0.137 netmask 0xffffffe0 broadcast 192.168.0.159
        inet6 fe80::3285:a9ff:feed:122%re0 prefixlen 64 scopeid 0x1
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
        media: Ethernet autoselect (1000baseT <full-duplex>)
        status: active
bridge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu
1500
        ether 02:0d:2a:df:6e:00
        nd6 options=1<PERFORMNUD>
        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 4 priority 128 path cost 2000000
        member: re0 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:fe:79:0e:00
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
        media: Ethernet autoselect
        status: active
        Opened by PID 16910

# netstat -rn
Routing tables

Internet:
Destination        Gateway            Flags    Refs      Use  Netif Expire
default            5.9.157.129        UGS         0   293321    re0
192.168.0.128/27   link#1             U           0       30    re0
192.168.0.137      link#1             UHS         0        0    lo0
127.0.0.1          link#2             UH          0     1606    lo0

---snip---

---snip---
guest:
# ifconfig
vtnet0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0
mtu 1500
        options=80028<VLAN_MTU,JUMBO_MTU,LINKSTATE>
        ether 00:a0:98:18:c4:69
        inet 192.168.0.154 netmask 0xffffffe0 broadcast 192.168.0.159
        inet6 fe80::2a0:98ff:fe18:c469%vtnet0 prefixlen 64 scopeid 0x1
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
        media: Ethernet 10Gbase-T <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 0x2
        inet 127.0.0.1 netmask 0xff000000
        nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>

# netstat -rn
Routing tables

Internet:
Destination        Gateway            Flags    Refs      Use  Netif Expire
default            5.9.157.129        UGS         0      418 vtnet0
192.168.0.128/27   link#1             U           0       24 vtnet0
192.168.0.154      link#1             UHS         0        0    lo0
127.0.0.1          link#2             UH          0       24    lo0

---snip---

ping host -> guest works

# ping 192.168.0.154
PING 192.168.0.154 (192.168.0.154): 56 data bytes
64 bytes from 192.168.0.154: icmp_seq=0 ttl=64 time=0.083 ms
64 bytes from 192.168.0.154: icmp_seq=1 ttl=64 time=0.094 ms


ping guest -> host works

# ping 192.168.0.137
PING 192.168.0.137 (192.168.0.137): 56 data bytes
64 bytes from 192.168.0.137: icmp_seq=0 ttl=64 time=0.398 ms
64 bytes from 192.168.0.137: icmp_seq=1 ttl=64 time=0.069 ms


ping 173.194.70.102 (google.com) from guest - doesn't work...
# ping 173.194.70.102
PING 173.194.70.102 (173.194.70.102): 56 data bytes
--- 173.194.70.102 ping statistics ---
3 packets transmitted, 0 packets received, 100.0% packet loss

tcpdump listening on the host:

# tcpdump -N -vv -i bridge0
tcpdump: WARNING: bridge0: no IPv4 address assigned
tcpdump: listening on bridge0, link-type EN10MB (Ethernet), capture size
65535 bytes
19:58:19.139767 ARP, Ethernet (len 6), IPv4 (len 4), Request who-has static
tell 192.168.0.137, length 46

---^ same on tap0


What's wrong with that setup? Did I forget to set a proper route? Or is it
a MAC address issue?

Thanks in advance,

Sebastian


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