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<div class="moz-cite-prefix">On 12/24/21 20:19, Bill Yuan wrote:<br>
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<blockquote type="cite"
cite="mid:CAC+JH2wTU_NbtJXTi=VUKYrfweJ2J1ZgvJBvWK-+fLvPbXq0Jw@mail.gmail.com">
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<div class="gmail_default"
style="font-family:verdana,sans-serif;font-size:small;color:#000000">Hi,</div>
<div class="gmail_default"
style="font-family:verdana,sans-serif;font-size:small;color:#000000"><br>
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<div class="gmail_default"
style="font-family:verdana,sans-serif;font-size:small;color:#000000">I
fully agree with you. it must be very helpful during the
configuration, especially in your network scenario.</div>
<div class="gmail_default"
style="font-family:verdana,sans-serif;font-size:small;color:#000000"><br>
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<div class="gmail_default"
style="font-family:verdana,sans-serif;font-size:small;color:#000000">Maybe,
you can try to implement a script to do that, update the ipfw3
whenever the IP changes.</div>
<div class="gmail_default"
style="font-family:verdana,sans-serif;font-size:small;color:#000000"><br>
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<div class="gmail_default"
style="font-family:verdana,sans-serif;font-size:small;color:#000000">Regards,</div>
<div class="gmail_default"
style="font-family:verdana,sans-serif;font-size:small;color:#000000">Bill
Yuan</div>
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<div dir="ltr" class="gmail_attr">On Sat, 25 Dec 2021 at 04:32,
samg <<a href="mailto:samg@fastmail.com"
moz-do-not-send="true" class="moz-txt-link-freetext">samg@fastmail.com</a>>
wrote:<br>
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<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On
Fri, Dec 24, 2021, at 10:05 AM, Edgar Pettijohn wrote:<br>
> From the manual:<br>
><br>
> [ifX*:net*]<br>
> Matches the IPv4 network of the
first IPv4 address<br>
> assigned to the *ifX*. It is
intended to help matching the<br>
> IPv4 network of the IPv4 address
assigned to the *ifX*<br>
> dynamically, e.g. by DHCP.<br>
<br>
Thats from the ipfw manual, not the ipfw3 manual. ipfw3
doesn't support that syntax in the nat config. Looking at the
source, it parses the ip with inet_aton, which only accepts
ips in the form xxx.xxx[.xxx[.xxx]]<br>
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<p>Just curious if you've tried it anyway. Might be an undocumented
feature. Or maybe you can assign an alias ip to the interface and
use that ip for natting to.<br>
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