CC: [email protected]; [email protected]; [email protected]; [email protected]; [email protected] From: [email protected] Subject: Re: [ovs-discuss] [ovs-dev] Problem with DHCP and TUNNEL Date: Thu, 24 May 2012 15:30:26 +0300 To: [email protected] On May 24, 2012, at 15:04, Daniele Milani <[email protected]> wrote: > From: [email protected] > Date: Wed, 23 May 2012 09:20:21 -0700 > Subject: Re: [ovs-dev] Problem with DHCP and TUNNEL > To: [email protected] > CC: [email protected]; [email protected]; [email protected]; > [email protected] > > On Wed, May 23, 2012 at 8:59 AM, Daniele Milani <[email protected]> wrote: > > > > > >> From: [email protected] > >> Date: Wed, 23 May 2012 08:27:35 -0700 > >> Subject: Re: [ovs-dev] Problem with DHCP and TUNNEL > >> To: [email protected] > >> CC: [email protected]; [email protected]; [email protected]; > >> [email protected] > > > >> > >> On Wed, May 23, 2012 at 7:49 AM, Daniele Milani <[email protected]> > >> wrote: > >> > Hi, > >> > I have the following situation: > >> > -two different physical hosts (H1 and H2); > >> > -in H1 I created a bridge (br1) and I started a dnsmasq daemon listening > >> > on > >> > it (DHCPDAEMON1); > >> > -in H2 I created another bridge (br2) and I started a dnsmasq daemon > >> > listening on it (DHCPDAEMON2); > >> > -I created a gre tunnel between H1 and H2. > >> > > >> > The problem is that, if I start a Virtual Machine on H1 I receive DHCP > >> > offer > >> > both from DHCPDAEMON1 and DHCPDAEMON2, and if I start a VM on H2 I > >> > obtain > >> > the same behaviour. > >> > > >> > My question is: is it possible to prevent DHCP traffic from passing into > >> > the > >> > tunnel? > >> > >> You can write a flow using ovs-ofctl to drop DHCP traffic. > > > > Where can I find an example of how to write a flow? > > The man page. Does it exist an OvS command that returns the port number from port name? Yes ovs-vsctl -- get Iterface portname ofport Ok thanks P.S. the flow command is ovs-ofctl add-flow bridge_name "in_port=port_number tp_src=67 tp_dst=68 actions=drop"
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