[Dnsmasq-discuss] dhcpv6 @ rc1

[Vladislav Grishenko]

Hi, Simon

 

In latest 60rc1, it seems need to use enable-ra along with
dhcp-range=ipv6,ipv6,.

Without it default link local gateway can't be assigned to clients, because
it's always done via RA.

 

About dhcp-range, prefix6::, ra-only syntax,

According sources, preffered and valid lifetime can be set with ra-only
token, but not mentioned in sample conf, a bit confusing

 

Next thing is dnsv6 option, it works a bit abnormally (comparing with v4)

Suppose we need to assign several dns servers, where one is dnsmasq itself.

With dhcpv4 it could be done with

dhcp-option=44,dns1,0.0.0.0

But following for dhcpv6 passes [::] in reply message, instead of interface
global/link local address

dhcp-option=option6,dns-server,[dns1],[dns2],[::]

 

As for dnsv6 without dhcpv6, list can be passed via RA RDNSS option, see RFC
6106.

Windows clients don't support it, and, according technet, will never do.
However, there's 3rd party win32 daemons, which can be used, like
rdnssd-win32

*nix also has support in 3rd party standalone daemons.

 

Best Regards, Vladislav Grishenko

ICQ: 303357

MSN: themiron at mail.ru

Skype: the.miron

 

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