Re: [gentoo-user] Get bridge working for xen

[Joost Roeleveld]

On Wednesday 16 April 2014 23:17:27 Facu Curti wrote:
> On Thu, Apr 17, 2014 at 09:54:46AM +0800, AR wrote:
> > On Thu, Apr 17, 2014 at 9:31 AM, Facu Curti <facu.curti@×××××.com> wrote:
> > > Hi all! :)
> > >
> > > I'm following the gentoo wiki [1]. I can't find any mistake on config
> > > files, but network does not work :/.
> > >
> > > I don't have any xen configuration (or domU) yet. I'm just trying to get
> > > a bridge with functional network on my domain0.
> > >
> > > I attach my /etc/conf.d/net
> > >
> > > When I try to ping, with any iface, to to outside, or even to the
> > > getaway, it says host unreachable. Also, the system delays on load the
> > > system. It takes like 30 sec more, and conky get stuck (I use it to
> > > take data like IP, getway, dns, etc..).
> > >
> > > I hope can help me please, I need to get this working :/
> > >
> > > Thank you! You all are the best!! Bye!
> > >
> > > Sorry if my english is not the best :/
> > >
> > > [1] https://wiki.gentoo.org/wiki/Xen#Networking_on_Unpriviledged_Domains
> >
> > and what is your current network situation and your config (in
> > /etc/conf.d/net) ?>
>
> My /etc/conf.d/net is:
> 	config_enp3s0="192.168.1.2 netmask 255.255.255.0 brd 192.168.1.255"
> 	routes_enp3s0="default via 192.168.1.1"
>
>
> And ifconfig:
>
> enp3s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>         inet 192.168.1.2  netmask 255.255.255.0  broadcast 192.168.1.255
> 	ether ac:22:0b:c1:dc:de  txqueuelen 1000  (Ethernet)
> 	RX packets 4630  bytes 4343241 (4.1 MiB)
> 	RX errors 0  dropped 0  overruns 0  frame 0
> 	TX packets 4923  bytes 686607 (670.5 KiB)
> 	TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
>
> lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
> 	inet 127.0.0.1  netmask 255.0.0.0
> 	loop  txqueuelen 0  (Local Loopback)
> 	RX packets 0  bytes 0 (0.0 B)
> 	RX errors 0  dropped 0  overruns 0 frame 0
> 	TX packets 0  bytes 0 (0.0 B)
>         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
>
> > Just for reference, here is my config.
> >
> > the IP on br0 is got from DHCP, everything else should be similar.
> >
> > modules="iproute2" # optional
> >
> > config_eth0="null"
> >
> > dns_servers_br0="192.168.1.136"
> >
> > config_br0="dhcp" # change this line if your network config is static
> > brctl_br0="setfd 0 sethello 10 stp off"
> > bridge_br0="eth0"
> >
> > rc_net_br0_need="net.eth0"
> > rc_net_eth0_provide="!net"
>
> I will try this config. I need an static ip, but I can do this from
> router configuring the dhcp server. So, it is not a problem.
>
> I bring news in a few minutes
> Thank you!


If you specify an IP for the interface AND the bridge, which one will be used 
for the communication?

I would suggest the following for your "net" config:

---
config_enp3s0="null"

bridge_xenbr0="enp3s0"
config_xenbr0="192.168.1.2 netmask 255.255.255.0 brd 192.168.1.255"
routes_xenbr0="default gw 192.168.1.1"
rc_net_xenbr0_need="net.enp3s0"
---

Also ensure you have a " net.xenbr0 " file:

#  cd /etc/init.d
#  ln -s net.xenbr0   net.lo

Then start net.xenbr0:

# /etc/init.d/net.xenbr0  start

If this doesn't work, please send the results of the following commands:

#  ifconfig -a
#  brctl show

Kind regards,

Joost Roeleveld