Need help at Network configuation of VM's with ten ip's

[Robin4711]

Hello,

i have ten ip's from provider like that:

100.200.80.100
..
..
100.200.80.109

proxmox have the first ip (100.200.80.100) and i will set the second ip (100.200.80.101) to a FreeBSD VM, so that it is reached from outside and has acces to the internet.
I have try everything i found on the web but nothing works maybe because it's not explained detail enough.

What i have to write in the /etc/network/interfaces of the host?
Which Network settings at proxmox for the VM?
Which Network settings on FreeBSD on the VM?

I hope you can help me, and im sorry for my bad english!

regards,
Robin

 

[Nemesiz]

Create a bridge (vmbr0) and attack eth0 to it. Set up 100.200.80.100 on it. Add VM NIC to vmbr0 and set 100.200.80.109 IP address in VM. Nothing more.

 

[Robin4711]

Tanks for your reply!
How does the interfaces of the host looks like then?
Can you give me an example?

Thats my interface: (how can i post as code?)
auto eth0
iface eth0 inet static
address 100.200.80.100
netmask 255.255.255.0
gateway 100.200.80.1
post-up echo 1 > /proc/sys/net/ipv4/conf/eth0/proxy_arp

auto vmbr0
iface vmbr0 inet manual
bridge_stp off
bridge_fd 0

 

[pirateghost]

Tanks for your reply!
How does the interfaces of the host looks like then?
Can you give me an example?

Thats my interface: (how can i post as code?)
auto eth0
iface eth0 inet static
address 100.200.80.100
netmask 255.255.255.0
gateway 100.200.80.1
post-up echo 1 > /proc/sys/net/ipv4/conf/eth0/proxy_arp

auto vmbr0
iface vmbr0 inet manual
bridge_stp off
bridge_fd 0

Your host address should go on vmbr0 and eth0 should be a bridge member of vmbr0

 

[Robin4711]

Can you post a interface, how it looks like ?

 

[Nemesiz]

auto eth0
iface eth0 inet manual

auto vmbr0
iface vmbr0 inet static
    address  100.200.80.100
    netmask  255.255.255.0
    gateway  100.200.80.1
    bridge_ports eth0
    bridge_stp off
    bridge_fd 0
    post-up echo 1 > /proc/sys/net/ipv4/conf/eth0/proxy_arp

 

[Robin4711]

Ok, Thank you!
So i set the ip at FreeBSD to 100.200.80.101 and netmask to 255.255.255.0, right?
Whats with gateway and which ethernet controller?

 

[Nemesiz]

Gateway is the same.

 

[Robin4711]

Ok, so gateway is 100.200.80.1.
And can i use the Realtek ethernet controller?

Have the interfaces looks like that:

auto eth0
iface eth0 inet manual

auto vmbr0
iface vmbr0 inet static
address 100.200.80.100
netmask 255.255.255.0
gateway 100.200.80.1
bridge_ports eth0
bridge_stp off
bridge_fd 0
post-up echo 1 > /proc/sys/net/ipv4/conf/eth0/proxy_arp

or have i write
auto lo
iface lo inet loopback

over it?

 

[Nemesiz]

Yes

 

[Robin4711]

Ok! My last question:

have i write
auto lo
iface lo inet loopback

over your example?
I thank u very much fo your help

 

[Nemesiz]

I would write these lines

 

[Robin4711]

It doesnt work...

My interfaces:

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet manual

auto vmbr0
iface vmbr0 inet static
    address  100.200.48.100
    netmask  255.255.255.0
    gateway  100.200.48.1
    bridge_ports eth0
    bridge_stp off
    bridge_fd 0
    post-up echo 1 > /proc/sys/net/ipv4/conf/eth0/proxy_arp

my rc.conf in FeeBSD:

ifconfig_re0="inet 100.200.48.101 netmask 255.255.255.0"
defaultrouter="100.200.48.1"

should i have activate DHCP on FreeBSD?

 

[Nemesiz]

No but can you print `brctl show` from host ?

 

[Robin4711]

€dit: i have put STP to on and it works! I have acces from outside. But the vm itself has no connection outside?
The command: ntpdate -s pool.ntp.org gives back: hostname nor servername provided, or not known

bridgename:
vmbr0

bridge id:
8000.a02bb81f72a4

STP enabled:
no

interfaces:
eth0
tap100i0

 

[Nemesiz]

Can you ping 100.200.80.100 and 100.200.80.1 from VM ? I cant ping or trace to 100.200.80.100 or 100.200.80.1

 

[Robin4711]

i have put STP to on and it works! I have acces from outside. But the vm itself has no connection outside?
The command: ntpdate -s pool.ntp.org gives back: hostname nor servername provided, or not known.
The VM can ping the host at 100.200.48.100 and the host can ping the VM at 100.200.48.101

The ip's are differents in real.

 

[Nemesiz]

for DNS you have to look at resolv.conf at linux. Best way to test I use ping 8.8.8.8

 

[Robin4711]

Ping 8.8.8.8 works.

My /etc/resolv.conf:

domain localhost
nameserver 100.200.48.1

 

[Nemesiz]

ping 8.8.8.8 works from host and VM ? If yes then change nameserver to 8.8.8.8 to solve DNS problem. Or maybe it block something else like firewall.