Re: [Dnsmasq-discuss] How to update ipv6 for own interface? (Updated info)

[John Siu]

Thank you! "interface-name" work immediately!!

I lost count of how many times I went through the man page top to
bottom the past few days and I completely miss that option. I few like
blind ...

On Thu, Dec 12, 2019 at 1:05 PM Simon Kelley  wrote:
>
> On 10/12/2019 03:31, John Siu wrote:
> > Ok, let me elaborate more.
> >
> > I have following setup:
> >
> > Linux router server:
> > - OS: Ubuntu 18.04
> > - wide-dhcp-client on external(internet facing) nic
> > - dnsmasq on lan interface(hostname: router) as dns, ipv4 + ipv6 dhcp
> > - lan interface IPv6 configure by wide-dhcp-client, IPv4
> > static(172.16.168.1) via netplan
> > - internal domain: int.johnsiu.com (configure in
> > dnsmasq)
> >
> > Servers on LAN
> > - couple mac, linux machines on lan network
> > - all have static dhcp ipv4 from dnsmasq.
> > - all have ipv4 entry in router /etc/hosts
> >
> > dnsmasq is able to do dns resolve for all linux machines for both ipv4
> > and ipv6. eg:
> >
> > ssh -4 test.int.johnsiu.com 
> > ssh -6 test.int.johnsiu.com 
> >
> > However, this does not work for the router lan interface. I already did
> > following:
> >
> > In /etc/hosts:
> >
> >   172.16.168.1 router
> >
> > In /etc/dnsmasq.d/lan.conf, I have following lines for router:
> >
> >   dhcp-host=e2:1d:6b:2d:33:e7,172.16.168.1,router,infinite
> >
> > While "ssh -4 router.int.johnsiu.com "
> > works, "ssh -6 router.int.johnsiu.com "
> > doesn't.
> >
> > Is there a way to make it happen?
> >
> >
>
> There is indeed.
>
> interface-name=router,
>
> Unless specifically configured otherwise, this works for IPv4 and IPv6
> for your partial solution is no longer required.
>
> Cheers,
>
> Simon.
>
>
>
>
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Re: [Dnsmasq-discuss] How to update ipv6 for own interface? (Updated info)

[Simon Kelley]

On 10/12/2019 03:31, John Siu wrote:
> Ok, let me elaborate more.
> 
> I have following setup:
> 
> Linux router server:
> - OS: Ubuntu 18.04
> - wide-dhcp-client on external(internet facing) nic
> - dnsmasq on lan interface(hostname: router) as dns, ipv4 + ipv6 dhcp
> - lan interface IPv6 configure by wide-dhcp-client, IPv4
> static(172.16.168.1) via netplan
> - internal domain: int.johnsiu.com (configure in
> dnsmasq)
> 
> Servers on LAN
> - couple mac, linux machines on lan network
> - all have static dhcp ipv4 from dnsmasq.
> - all have ipv4 entry in router /etc/hosts
> 
> dnsmasq is able to do dns resolve for all linux machines for both ipv4
> and ipv6. eg:
> 
> ssh -4 test.int.johnsiu.com 
> ssh -6 test.int.johnsiu.com 
> 
> However, this does not work for the router lan interface. I already did
> following:
> 
> In /etc/hosts:
> 
>   172.16.168.1 router
> 
> In /etc/dnsmasq.d/lan.conf, I have following lines for router:
> 
>   dhcp-host=e2:1d:6b:2d:33:e7,172.16.168.1,router,infinite
> 
> While "ssh -4 router.int.johnsiu.com "
> works, "ssh -6 router.int.johnsiu.com "
> doesn't.
> 
> Is there a way to make it happen?
> 
>

There is indeed.

interface-name=router,

Unless specifically configured otherwise, this works for IPv4 and IPv6
for your partial solution is no longer required.

Cheers,

Simon.




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