Bypass router DNS for one SSID

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neerav
DD-WRT Novice


Joined: 08 Jul 2010
Posts: 44

PostPosted: Fri Jun 30, 2017 14:34    Post subject: Bypass router DNS for one SSID Reply with quote
I have set up a few SSIDs including guest networks. Also have set up VPN client for all connections and a hosts file-based ad blocking as per the wiki entry. Everything works swimmingly.

To force all clients including guests to use my router and ad-blocking as their DNS, I have used "dhcp-option=6,192.168.1.1" in Additional DNSMasq Options.

For rare use because some site may only work through an unrestricted connection (non-vpn, non-adblocked), I have created an SSID that bypasses the VPN. It works fine. I need to also bypass the local DNS because of the ad-blocking. I have put 207.68.22.222 as Optional DNS Target for this unrestricted SSID, however as expected above, the DNS is still handed out as 192.168.1.1.

Is there a DNSMasq option I can use to force a different DNS for JUST this one SSID? Because this SSID is just for my use, an option to unforce the dhcp-option 6?

Don't want to manually change the DNS on the device(s) because I need to have it automatically go back to 192.168.1.1 when using the other SSIDs.

Using 32170M kongac on an R8000.

_________________
LinkSys E1000 ...... DD-WRT
LinkSys E2000 ...... DD-WRT
Netgear R8000 ...... Finally DD-WRT
TP-Link WR710N ..... Stock (considering DD-WRT)
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neerav
DD-WRT Novice


Joined: 08 Jul 2010
Posts: 44

PostPosted: Sat Jul 01, 2017 16:04    Post subject: Reply with quote
Policy Based Routing. I put IP addresses in CIDR format of EVERYTHING I want to go through the VPN, and then leave out the IP range of the bypass-SSID.
_________________
LinkSys E1000 ...... DD-WRT
LinkSys E2000 ...... DD-WRT
Netgear R8000 ...... Finally DD-WRT
TP-Link WR710N ..... Stock (considering DD-WRT)
neerav
DD-WRT Novice


Joined: 08 Jul 2010
Posts: 44

PostPosted: Fri Jul 07, 2017 3:07    Post subject: Reply with quote
I would appreciate if you move your post to a new thread, so I can get an answer to my original post. PM me your new thread and I will try to help you there.
_________________
LinkSys E1000 ...... DD-WRT
LinkSys E2000 ...... DD-WRT
Netgear R8000 ...... Finally DD-WRT
TP-Link WR710N ..... Stock (considering DD-WRT)
neerav
DD-WRT Novice


Joined: 08 Jul 2010
Posts: 44

PostPosted: Sat Jul 08, 2017 18:17    Post subject: Solved: Bypass router DNS for one SSID Reply with quote
Figured it out.

Code:
dhcp-option=6,192.168.1.1
dhcp-option=wl1.1,6,208.67.222.222,208.67.220.220


The first line forces the DNS to the router's DNSMasq for everyone on all interfaces, which was already in the config. Then the second line specifies a different DNS for that ONE interface to bypass my router's DNSMasq and host-file ad blocking.

_________________
LinkSys E1000 ...... DD-WRT
LinkSys E2000 ...... DD-WRT
Netgear R8000 ...... Finally DD-WRT
TP-Link WR710N ..... Stock (considering DD-WRT)
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