On Fri, 2016-01-22 at 12:15 +0100, Antonio Prado wrote:
> On 1/22/16 11:02 AM, Seth Mos wrote:
> > > on a fresh installed box, IPv4 configured on 2 NICs (WAN and
> > > LAN), IPv6
> > > not configured, pfSense starts advertising itself as IPv6 gateway
> > > on LAN
> > > using its link-local address (fe80::/64).
> > > 
> > > That's not the correct behavior I guess.
> > > 
> > > Is it a bug?
> > 
> > No, that sounds about right, it advertises itself as the gateway.
> 
> well, let me disagree.
> when a router (pfSense) has RA disabled (as previously stated in my
> message), it simply should not per RFC 4861.

I've just skimmed through RFC 4861 and couldn't see this.  I then
grepped "disable" (three instances) and I think I found what you mean:
Section 6.2.2:

"The term "advertising interface" refers to any functioning and enabled
interface that has at least one unicast IP address assigned to it and
whose corresponding AdvSendAdvertisements flag is TRUE.  A router MUST
NOT send Router Advertisements out any interface that is not an
advertising interface."

That leads us to look into "AdvSendAdvertisements" and also wonder
whether "at least one unicast IP address assigned" is IPv6 only or
includes v4: Section 2.4:

"address     - an IP-layer identifier for an interface or a set of
                 interfaces.
"

So that's clear!

I started to follow up on AdvSendAdvertisements but it's also a bit
random.

The standard is a bit wooley. 

What is the fault you are actually trying to fix?

Cheers
Jon




> in other words, nevertheless pfSense 2.2.6 has no IPv6 configured
> (i.e.
> no v6 address on interfaces, RA disabled), it advertises itself as
> IPv6 gw.
> 
> let me know
> thank you
> --
> antonio
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