Frame Tagging

[Steven Carr]

You asked the same question a week ago and didn't get a response.
Please don't repost.


On 1 August 2013 15:24, George S. <georges at mhsoftware.com> wrote:
> I'm using DHCP 4.2.5 on a linux machine running kernel version 3.7.10
>
> I've got the eth0 interface setup using Frame Tagging.  I've got a secondary
> interface eth0.2 running the network 172.22.0.0. There is only one physical
> network. The frame tagging is getting done by a wifi access point. Anything
> coming over the open wifi network should be coming in with the frame tagged
> for id 2. The problem is that DHCP seems to be doing things wrong. It's
> looking to me like it's ignoring the frame tagging and it's processing the
> DHCP request on both interfaces. So, I'm getting people from the public wifi
> on the wrong network.
>
> I've searched and looked through old messages on this topic, but I've never
> found anything that looked like either a solution or a definitive
> pronouncement that it just can't work.
>
> I've looked through the docs and I saw the comment about frame tagging and
> vconfig. I implemented that but it makes no difference.
>
> Here are some messages in my log:
>
> 2013-07-22T13:17:29.121349-06:00 server dhcpd: DHCPOFFER on 172.22.13.223 to
> 84:29:99:7c:7e:fa (Karas-iPhone) via eth0.2
> 2013-07-22T13:17:29.121389-06:00 server dhcpd: DHCPOFFER on 10.1.10.95 to
> 84:29:99:7c:7e:fa (Karas-iPhone) via eth0
> 2013-07-22T13:17:30.202147-06:00 server dhcpd: DHCPREQUEST for 172.22.13.223
> (172.22.0.32) from 84:29:99:7c:7e:fa (Karas-iPhone) via eth0.2
> 2013-07-22T13:17:30.202381-06:00 server dhcpd: DHCPACK on 172.22.13.223 to
> 84:29:99:7c:7e:fa (Karas-iPhone) via eth0.2
> 2013-07-22T13:17:30.202594-06:00 server dhcpd: DHCPREQUEST for 172.22.13.223
> (172.22.0.32) from 84:29:99:7c:7e:fa (Karas-iPhone) via eth0: wrong network.
> 2013-07-22T13:17:30.202753-06:00 server dhcpd: DHCPNAK on 172.22.13.223 to
> 84:29:99:7c:7e:fa via eth0
>
>
>
> Here's my dhcpd.conf
>
> authoritative;
> option domain-search "crossingchurch.org", "wcon.org", "private.wcon.org";
> ddns-update-style interim;
> deny client-updates;
>
> log-facility local7;
>
>
> key DHCP_UPDATER {
>         algorithm hmac-md5;
>         secret "1hamjDWV1PIwTdmwRfLjezhrxkTpm1RqRAXaecLJ548=";
> }
>
> zone private.wcon.org {
>         primary 127.0.0.1;
>         key DHCP_UPDATER;
> }
>
> zone 10.1.10.in-addr.arpa {
>         primary 127.0.0.1;
>         key DHCP_UPDATER;
> }
>
> host sign.private.wcon.org {
>         hardware ethernet 00:20:4a:8e:e2:8c;
>         fixed-address 10.1.10.40;
> }
>
> subnet 10.1.10.0 netmask 255.255.255.0 {
>         option domain-name "private.wcon.org";
>         ddns-updates on;
>         option domain-name-servers 10.1.10.32;
>         option routers 10.1.10.1;
>         option ntp-servers 10.1.10.32;
>         range 10.1.10.64 10.1.10.254 ;
>         default-lease-time 252900;
>         max-lease-time 252900;
>         option netbios-name-servers 10.1.10.32;
> }
>
> subnet 172.22.0.0 netmask 255.255.0.0 {
>         option domain-name "pubwifi.crossingchurch.org";
>         ddns-updates off;
>         option domain-name-servers 172.22.0.32;
>         option routers 172.22.0.32;
>         option ntp-servers 172.22.0.32;
>         range 172.22.2.0 172.22.254.254 ;
>         default-lease-time 43200;
>         max-lease-time 43200;
> }
>
>
>
>
> --
> George Sexton
> MH Software, Inc.
> 303 438-9585
> http://www.mhsoftware.com/
>
>
>
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