Re: dhcpd doesn't acknowledge dhcp requests

Posted by Sean McMurray on Jun 11, 2015; 5:38pm
URL: http://isc-dhcp-users.193.s1.nabble.com/dhcpd-doesn-t-acknowledge-dhcp-requests-tp124p215.html

Yes. That is tagged vlan 112 on interface em2.
dhtest fails if I include a -v 112 to tell it about vlan 112.
What are the problems with tagged vlans?

On 06/11/2015 04:00 AM, Graham Clinch wrote:

> Hi,
>
>> #tcpdump -vv -i em2.112
>                   ^^^^^^^
> Is that tagged vlan 112 on interface em2? - I'd not spotted that
> previously.  I've never tried it personally, but my recollection of
> posts to this list is 'dhcpd and tagged vlans don't mix well'.
>
> Does dhtest fail if run from a different device?  If so, I guess it's
> really going over the (presumably untagged) loopback interface.
>
> Are you able to present vlan 112 untagged?
>
> Graham

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