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This is exactly what I’ve been trying to do, most probably I had something wrong with the syntax and that’s why it was not working, I’ll test it this week.<br>

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Thanks!

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<div id="AppleMailSignature" dir="ltr"><span style="background-color: rgba(255, 255, 255, 0);">Saludos Cordiales,<br>

Xavier Trilla P.<br>

</span><a href="https://clouding.io/" style="background-color: rgba(255, 255, 255, 0);"><font color="#000000">Clouding.io</font></a><span style="background-color: rgba(255, 255, 255, 0);"><br>

<br>

¿Un Servidor Cloud con SSDs, redundado<br>

y disponible en menos de 30 segundos?<br>

<br>

¡Pruébalo ahora en </span><a href="https://clouding.io/" style="background-color: rgba(255, 255, 255, 0);"><font color="#000000">Clouding.io</font></a><span style="background-color: rgba(255, 255, 255, 0);">!</span></div>

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El 6 gen 2019, a les 1:30, Ondrej Zajicek <<a href="mailto:santiago@crfreenet.org">santiago@crfreenet.org</a>> va escriure:<br>

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<div dir="ltr"><span>On Thu, Jan 03, 2019 at 11:10:00PM +0000, Xavier Trilla wrote:</span><br>

<blockquote type="cite"><span>Hi,</span><br>

</blockquote>

<blockquote type="cite"><span></span><br>

</blockquote>

<blockquote type="cite"><span>For some route selection configurations I need to check the bgp_path.len without some AS numbers.</span><br>

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<blockquote type="cite"><span></span><br>

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<blockquote type="cite"><span>I tried something like:</span><br>

</blockquote>

<blockquote type="cite"><span></span><br>

</blockquote>

<blockquote type="cite"><span>bgp_path.delete(AS_1);</span><br>

</blockquote>

<blockquote type="cite"><span>bgp_path.delete(AS_2);</span><br>

</blockquote>

<blockquote type="cite"><span></span><br>

</blockquote>

<blockquote type="cite"><span>if bgp_path.len < N then ...</span><br>

</blockquote>

<blockquote type="cite"><span></span><br>

</blockquote>

<blockquote type="cite"><span>But doing this I modify permanently the AS path.</span><br>

</blockquote>

<blockquote type="cite"><span></span><br>

</blockquote>

<blockquote type="cite"><span>I've tried using a temp variable, but looks like bird doesn't allow to create bgppath "variables".</span><br>

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<span></span><br>

<span>Hi</span><br>

<span></span><br>

<span>Although approach suggested by Alexander Zubkov is applicable,</span><br>

<span>i would note that BIRD allows bgppath variables, see:</span><br>

<span></span><br>

<span>filter testfilter</span><br>

<span>bgppath pp;</span><br>

<span>{</span><br>

<span> pp = bgp_path;</span><br>

<span> pp = prepend(pp, 65500);</span><br>

<span> pp = prepend(pp, 65500);</span><br>

<span> print pp, " ", pp.len;</span><br>

<span> accept;</span><br>

<span>}</span><br>

<span></span><br>

<span>The only think that is strange is that operators like delete or prepend</span><br>

<span>cannot be used with 'dot-syntax' (i.e. pp.prepend(X)), but must be used</span><br>

<span>with 'function-syntax' (i.e. pp = prepend(pp, X)).</span><br>

<span></span><br>

<span>-- </span><br>

<span>Elen sila lumenn' omentielvo</span><br>

<span></span><br>

<span>Ondrej 'Santiago' Zajicek (email: <a href="mailto:santiago@crfreenet.org">santiago@crfreenet.org</a>)</span><br>

<span>OpenPGP encrypted e-mails preferred (KeyID 0x11DEADC3, <a href="http://wwwkeys.pgp.net">

wwwkeys.pgp.net</a>)</span><br>

<span>"To err is human -- to blame it on a computer is even more so."</span><br>

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