Date: Thu, 24 Jul 2025 05:26:12 +0200 From: John Hay <john@sanren.ac.za> To: Karl Denninger <karl@denninger.net> Cc: freebsd-net@freebsd.org Subject: Re: rtadvd appears to ignore options set in /etc/rtadvd.conf Message-ID: <CAGv8uaoOJ5K3DghoXJHzGchTT_8xMdmOQyrQbFHJ73nUMB2fzw@mail.gmail.com> In-Reply-To: <bfb35bcc-f69b-40f9-adde-d6cb70d38246@denninger.net> References: <2ceaf7ed-3a04-47f3-a1f1-9f8a40cab9ef@denninger.net> <nr9p9rsq-8o1p-3159-onqo-349p5q667864@yvfgf.mnoonqbm.arg> <bfb35bcc-f69b-40f9-adde-d6cb70d38246@denninger.net>
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[-- Attachment #1 --]
Hi Karl,
What if you use a = instead of the #? For example :vltime=86400:
I set rdnss and dnssl using = and that works.
John
On Thu, 24 Jul 2025 at 01:38, Karl Denninger <karl@denninger.net> wrote:
> On 7/23/2025 16:47, Bjoern A. Zeeb wrote:
>
> On Wed, 23 Jul 2025, Karl Denninger wrote:
>
> Hi,
>
> (sorry I deleted the message as the tex/only part was barely parsable).
>
> Can you, for testing, try adding an
> addr="xxx:xxx:xxx:xxxx::":\
> to one of your entries and see if the behaviour changes?
>
> /bz
>
> root@IpGw:/etc # more /etc/rtadvd.conf
> # Set the preferred lifetime to 10 minutes on advertised prefixes.
> # All other parameters are default.
> #
> default:\
> :vltime#86400:\
> :pltime#3600:\
> :prefixlen#64:addr="xxx:xxx:xxx:xxxx::":
> ix1:\
> :vltime#86400:\
> :pltime#3600:\
> :prefixlen#64:addr="xxx:xxx:xxx:xxxx::":
> ix1.4:\
> :vltime#86400:\
> :pltime#3600:\
> :prefixlen#64:
>
> No change -- the announcement is going out on ix1 from the gateway.
>
> On machine receiving the advertisements:
>
> 19:35:49.085297 IP6 (hlim 255, next-header ICMPv6 (58) payload length: 56)
> fe80::2e0:b4ff:fe68:f895 > ff02::1: [icmp6 sum ok] ICMP6, router
> advertisement, length 56
> hop limit 64, Flags [none], pref medium, router lifetime 1800s,
> reachable time 0ms, retrans timer 0ms
> source link-address option (1), length 8 (1): 00:e0:b4:68:f8:95
> prefix info option (3), length 32 (4): 2606:83c0:8000:1b00::/64,
> Flags [onlink, auto], *valid time 2592000s, pref. time 604800s*
>
>
> --
> Karl Denninger
> karl@denninger.net
> *The Market Ticker*
> *[S/MIME encrypted email preferred]*
>
[-- Attachment #2 --]
<div dir="ltr"><div>Hi Karl,</div><div><br></div><div>What if you use a = instead of the #? For example :vltime=86400:</div><div><br></div><div>I set rdnss and dnssl using = and that works.</div><div><br></div><div>John</div><div><br></div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Thu, 24 Jul 2025 at 01:38, Karl Denninger <<a href="mailto:karl@denninger.net">karl@denninger.net</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><u></u>
<div>
<div>On 7/23/2025 16:47, Bjoern A. Zeeb
wrote:<br>
</div>
<blockquote type="cite">On
Wed, 23 Jul 2025, Karl Denninger wrote:
<br>
<br>
Hi,
<br>
<br>
(sorry I deleted the message as the tex/only part was barely
parsable).
<br>
<br>
Can you, for testing, try adding an
<br>
addr="xxx:xxx:xxx:xxxx::":\
<br>
to one of your entries and see if the behaviour changes?
<br>
<br>
/bz <br>
<br>
</blockquote>
root@IpGw:/etc # more /etc/rtadvd.conf<br>
# Set the preferred lifetime to 10 minutes on advertised prefixes.<br>
# All other parameters are default.<br>
#<br>
default:\<br>
:vltime#86400:\<br>
:pltime#3600:\<br>
:prefixlen#64:addr="xxx:xxx:xxx:xxxx::":<br>
ix1:\<br>
:vltime#86400:\<br>
:pltime#3600:\<br>
:prefixlen#64:addr="xxx:xxx:xxx:xxxx::":<br>
ix1.4:\<br>
:vltime#86400:\<br>
:pltime#3600:\<br>
:prefixlen#64:<br>
<p>No change -- the announcement is going out on ix1 from the
gateway.</p>
<p>On machine receiving the advertisements:</p>
<p>19:35:49.085297 IP6 (hlim 255, next-header ICMPv6 (58) payload
length: 56) fe80::2e0:b4ff:fe68:f895 > ff02::1: [icmp6 sum ok]
ICMP6, router advertisement, length 56<br>
hop limit 64, Flags [none], pref medium, router lifetime
1800s, reachable time 0ms, retrans timer 0ms<br>
source link-address option (1), length 8 (1):
00:e0:b4:68:f8:95<br>
prefix info option (3), length 32 (4):
2606:83c0:8000:1b00::/64, Flags [onlink, auto], <b><u>valid time
2592000s, pref. time 604800s</u></b><br>
<br>
</p>
<br>
<div>-- <br>
Karl Denninger<br>
<a href="mailto:karl@denninger.net" target="_blank">karl@denninger.net</a><br>
<i>The Market Ticker</i><br>
<font size="-2"><i>[S/MIME encrypted email preferred]</i></font></div>
</div>
</blockquote></div>
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