OPNsense Forum

Archive => 18.1 Legacy Series => Topic started by: onnieoneone on March 19, 2018, 10:17:11 pm

Title: No IPv6 prefixes between 56 and 60 allowed?
Post by: onnieoneone on March 19, 2018, 10:17:11 pm

Hi,

I'm successfully running a a wan interface with a DHCPv6 Config File Override that gets a /57 prefix from an upstream router and configures some internal vlan interfaces.

This works nicely.

My override file, /var/etc/dhcp6c_wan.override.conf looks like this:

Code: [Select]

interface igb3 {
  send ia-na 0; # request stateful address
  send ia-pd 0; # request prefix delegation
  request domain-name-servers;
  request domain-name;
  script "/var/etc/dhcp6c_wan_script.sh"; # we'd like some nameservers please
};
id-assoc na 0 { };
id-assoc pd 0 {
  prefix ::/57 infinity;
  prefix-interface lagg0_vlan620 {
    sla-id 20;
    sla-len 7;
  };
  prefix-interface lagg0_vlan640 {
    sla-id 40;
    sla-len 7;
  };
  prefix-interface lagg0_vlan660 {
    sla-id 60;
    sla-len 7;
  };
  prefix-interface lagg0_vlan680 {
    sla-id 80;
    sla-len 7;
  };
};
This is basically an extension from what gets created from the "Basic" mode, only I have:
1. A /57 prefix. My upstream router gets a /48 from my ISP but then will only hand out a /57 and no other. This 57 is not a chooseable option in the "Basic" interface, it goes from 56 to 60. Can this be fixed?
2. sla-ids that are more than 0xf, which is the maximum "allowed" in the "Track Interface" part of each interface's config. Can this be fixed too?

Thanks,
Ben

Title: Re: No IPv6 prefixes between 56 and 60 allowed?
Post by: marjohn56 on March 19, 2018, 11:10:37 pm

That's really what the advanced and config overrides are for, so well done configuring it.

The basic is just that, a simple quick basic setting that would suit most users. If we start adding all the possibilities, it's no longer basic.

Title: Re: No IPv6 prefixes between 56 and 60 allowed?
Post by: franco on March 20, 2018, 07:06:12 am

Hi there,

Usually it's just a bug report that is required....

1. Should be addressed by adding all prefixes to the selection:

https://github.com/opnsense/core/commit/77bcfefd97

2. If sla-id said 0xf, it means you selected a /60. If you select a /57 now offers says 0x7f, which includes: 20, 40, 60.

Problem solved? :)


Cheers,
Franco

Title: Re: No IPv6 prefixes between 56 and 60 allowed?
Post by: marjohn56 on March 20, 2018, 08:49:07 am

Nice one @Franco, I missed the OP's point there.

Title: Re: No IPv6 prefixes between 56 and 60 allowed?
Post by: onnieoneone on March 20, 2018, 09:26:46 am

Excellent, looks like it will soon be all sorted. I will just make a bug report next time.

As you say, I had selected Basic with a prefix of /60 before I chose the Config File Override, so yes, I only got the choice of 0 to f. Selecting Basic and /56 and applying it prior to selecting Config File Override allowed me to "Enter a hexadecimal value between 0 and ff here," for the prefix id in the track interface section.

Thanks for the quick response.

Title: Re: No IPv6 prefixes between 56 and 60 allowed?
Post by: franco on March 20, 2018, 08:13:04 pm

@onnieoneone you can install this patch from the command line, but will also be in 181.1.5 tomorrow due to low impact:

# opnsense-patch 77bcfefd97


Thanks for this,
Franco