On 12/6/2018 3:50 PM, jmperrote wrote:
> El 2018-12-05 12:59, john doe escribió:
>> On 12/5/2018 1:58 PM, Geert Stappers wrote:
>>> On Wed, Dec 05, 2018 at 09:09:25AM -0300, jmperrote wrote:
>>>> El 2018-12-04 12:26, john doe escribió:
>>>>> On 12/4/2018 12:02 PM, jmperrote wrote:
>>>>>>
>>>>>>  John Doe, sorry for my mistake, my actual configuration of dnsmasq
>>>>>> are:
>>>>>>
>>>>>>     dhcp-range=interface:eth0,set:VLAN_37,10.11.37.50,10.11.37.200,6h
>>>>>>     dhcp-option=eth0,6,10.11.37.15 #dns primario
>>>>>>     dhcp-option=eth0,1,255.255.255.0 # mascara de red
>>>>>>     dhcp-option=eth0,option:router,10.11.37.1 # gateway
>>>>>>
>>>>>>     dhcp-range=interface:eth1,set:VLAN_137,10.11.137.90,10.11.137.98,6h
>>>>>>
>>>>>>     dhcp-option=eth1,6,10.11.37.15 #dns primario
>>>>>>     dhcp-option=eth1,1,255.255.255.0 # mascara de red
>>>>>>     dhcp-option=eth1,option:router,10.11.137.1 # gateway
>>>>>>
>>>>>>     dhcp-range=interface:eth2,set:VLAN_237,10.11.237.50,10.11.237.200,6h
>>>>>>
>>>>>>     dhcp-option=eth2,6,10.11.37.15 #dns primario
>>>>>>     dhcp-option=eth2,1,255.255.255.0 # mascara de red
>>>>>>     dhcp-option=eth2,option:router,10.11.237.1 # gateway
>>>>>>
>>>>>> We have 3 nics on the system eth0/eth1/eth2, one for each VLAN, and
>>>>>> try to replace for one nic with VLANs tagged.
>>>>>>
>>>>>> We try the tag option and the dhcp assign ip on correct range for
>>>>>> each
>>>>>> PC on each vlan, but dnsmasq allways assign to the PC the same
>>>>>> gateway, that is the las vlan configured.
>>>>>>
>>>>>> For example on this configuraton assign the correct range to the PC,
>>>>>> but the gateway always assign 10.11.237.1 gateway, to all PC
>>>>>>
>>>>>> dhcp-range=interface:eth0.37,set:VLAN_37,10.11.37.90,10.11.37.98,6h
>>>>>> dhcp-option=eth0.37,6,10.11.37.15 #dns primario
>>>>>> dhcp-option=eth0.37,1,255.255.255.0 # mascara de red
>>>>>> dhcp-option=eth0.37,option:router,10.11.37.1 # gateway
>>>>>>
>>>>>> dhcp-range=interface:eth0.137,set:VLAN_137,10.11.137.90,10.11.137.98,6h
>>>>>>
>>>>>> dhcp-option=eth0.137,6,10.11.37.15 #dns primario
>>>>>> dhcp-option=eth0.137,1,255.255.255.0 # mascara de red
>>>>>> dhcp-option=eth0.137,option:router,10.11.137.1 # gateway
>>>>>>
>>>>>> dhcp-range=interface:eth0.237,set:VLAN_237,10.11.237.50,10.11.237.200,6h
>>>>>>
>>>>>> dhcp-option=eth0.237,6,10.11.37.15 #dns primario
>>>>>> dhcp-option=eth0.237,1,255.255.255.0 # mascara de red
>>>>>> dhcp-option=eth0.237,option:router,10.11.237.1 # gateway
>>>>>>
>>>>>>
>>>>>> It is necessary to use "vconfig" to configure virtual vlan interface
>>>>>> on the operating system, or can use tagged vlans from the router ?
>>>>>>
>>>>>
>>>>> To be able to answer your question I need to know the following:
>>>>>
>>>>>  - What hardware is the router (netgear, cisco ...)?
>>>>>  - What type of distribution (name and version) are you using
>>>>> 'vconfig'
>>>>> on (Linux, Oracle)?
>>>>>
>>>>> I can't answer your question without knowing your network topology,
>>>>> but
>>>>> if the router is VLAN tagging capable I would use it and also use the
>>>>> DHCP capability from that router.
>>>>>
>>>>> Also, to isolate whether it is a vlan configuration or a dnsmasq issue
>>>>> simply try the line I have provided, obviously you can change the Ip
>>>>> ranges to your liking.
>>>>
>>>>
>>>> Hello john doe,
>>>
>>> Hello Mailinglist,
>>>
>>>>
>>>> Send the data:
>>>>  -- Router mikrotik RB1100 AH
>>>>  -- Ubuntu 16.04
>>>>  -- Using vconfig with 3 VLANs
>>>>
>>>> Yes, the router have capabilitie to dhcp,
>>>> you recommend to use that instead of dnsmasq for dhcp ?.
>>>
>>> What I did read in the reply from john doe:
>>>
>>>   Other options might resolve the original problem.
>>>
>>>
>>> But, yes, it is possible to replace
>>> three NICs with single NIC plus three VLANs.  Surely for DHCP stuff.
>>> If three NICs were choose due high bandwidth usage,
>>> that can't be solved by "VLAN".
>>>
>>
>> I guess nick bonding could be used with VLAN.
> 
> Hello, ok trying a solution to resolv dnsmasq with vlans and one nic, I
> do next
> 
> I reconfigured the dnsmasq with this and the mikrotik router with tagged
> vlans.
> 
> dhcp-range=tag:eth0,set:eth0,10.11.37.50,10.11.37.200,6h
> dhcp-range=tag:eth0,set:eth0,10.11.137.50,10.11.137.200,6h
> dhcp-range=tag:eth0,set:eth0,10.11.237.50,10.11.237.200,6h
> dhcp-option=tag:eth0,option:dns-server,10.11.37.15
> dhcp-option=tag:eth0,option:dns-server,10.11.37.15
> dhcp-option=tag:eth0,option:dns-server,10.11.37.15
> dhcp-option=tag:eth0,option:router,10.11.137.1
> dhcp-option=tag:eth0,option:router,10.11.37.1
> dhcp-option=tag:eth0,option:router,10.11.237.1
> dhcp-option=tag:eth0,1,255.255.255.0
> 
> The assign of ip work fine, each PC on each vlan pickup a IP on
> corresponding vlan, but on 3 PCs allways assign the same gateway -->
> 10.11.237.1
> 

If it is working for most of the hosts, my guess is that you need to
renew the lease on those hosts.

EG with dhclient:

$ dhclient -r <INT-NAME> && dhclient <INT-NAME>

Where <INT-NAME> is the name of the interface on which the lease need to
be released and acquired.

-- 
John Doe

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