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<p class="MsoNormal">Hi All,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’m trying to simulate DHCPv6 clients from IXIA and observe that only 1 or 2 clients gets honored with IPv6 address when simultaneous requests are sent from 64 clients, but the same thing works if the request is made one after the other
sequentially. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><u>Configuration below:<o:p></o:p></u></b></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> log-facility=/var/log/dnsmasq_swns/dnsmasq6.log<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">port=0<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-script=/usr/bin/dhcp_server_leases<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">leasefile-ro<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-lease-max=64000<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">bind-dynamic<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::e:2,2000::e:3<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::27:1,2000::27:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::16:1,2000::16:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::7:1,2000::7:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::26:1,2000::26:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::3b:1,2000::3b:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::32:1,2000::32:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::40:1,2000::40:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::28:1,2000::28:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::1b:1,2000::1b:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::3f:1,2000::3f:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::12:1,2000::12:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::9:1,2000::9:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::d:1,2000::d:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::36:1,2000::36:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::24:1,2000::24:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::1f:1,2000::1f:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::34:1,2000::34:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::21:1,2000::21:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::3a:1,2000::3a:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::17:1,2000::17:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::3d:1,2000::3d:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::1:1,2000::1:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::f:1,2000::f:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::22:1,2000::22:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::14:1,2000::14:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::2c:1,2000::2c:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::19:1,2000::19:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::1d:1,2000::1d:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::2:1,2000::2:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::37:1,2000::37:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::a:1,2000::a:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::38:1,2000::38:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::2a:1,2000::2a:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::23:1,2000::23:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::2b:1,2000::2b:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::4:1,2000::4:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::15:1,2000::15:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::8:1,2000::8:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::35:1,2000::35:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::1e:1,2000::1e:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::b:1,2000::b:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::3c:1,2000::3c:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::25:1,2000::25:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::3:1,2000::3:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::33:1,2000::33:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::31:1,2000::31:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::6:1,2000::6:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::18:1,2000::18:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::11:1,2000::11:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::1a:1,2000::1a:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::3e:1,2000::3e:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::2d:1,2000::2d:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::2e:1,2000::2e:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::39:1,2000::39:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::30:1,2000::30:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::5:1,2000::5:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::10:1,2000::10:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::c:1,2000::c:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::2f:1,2000::2f:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::29:1,2000::29:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::20:1,2000::20:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::1c:1,2000::1c:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">dhcp-range=set:default+test,2000::13:1,2000::13:2<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"># -------------------------------------------------------<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><u>Interface IP:<o:p></o:p></u></b></p>
<p class="MsoNormal" style="margin-left:.5in"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in">root@8320:~# ip -6 addr<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 state UNKNOWN qlen 1<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> inet6 ::1/128 scope host<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> valid_lft forever preferred_lft forever<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">2: bridge-vrf: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9198 state UP qlen 1000<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> inet6 fe80::1c5c:2ff:fe4f:8fb8/64 scope link<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> valid_lft forever preferred_lft forever<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">3: tap-br0@tap0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9198 state UP qlen 1000<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> inet6 fe80::e8fb:ecff:fed5:1091/64 scope link<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> valid_lft forever preferred_lft forever<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in">4: tap0@tap-br0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9198 state UP qlen 1000<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> inet6 fe80::1/64 scope link<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> valid_lft forever preferred_lft forever<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> inet6 fe80::bc2b:37ff:fe5c:be11/64 scope link<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"> valid_lft forever preferred_lft forever<o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><b><span style="background:yellow;mso-highlight:yellow">61: vlan1@bridge_normal: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 state UP qlen 1000<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:.5in"><b><span style="background:yellow;mso-highlight:yellow"> inet6 2000::e:1/64 scope global<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:.5in"><b><span style="background:yellow;mso-highlight:yellow"> valid_lft forever preferred_lft forever<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:.5in"><b><span style="background:yellow;mso-highlight:yellow"> inet6 fe80::cc37:ab80:1be:a7a/64 scope link<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-left:.5in"><b><span style="background:yellow;mso-highlight:yellow"> valid_lft forever preferred_lft forever</span><o:p></o:p></b></p>
<p class="MsoNormal"><b><o:p> </o:p></b></p>
<p class="MsoNormal">Logs attached for both cases. It throws error “no address available” even though configured ranges can provide 64 IPs. Is there any known issues with Ixia DHCPv6 client ? What is the best tool to do performance testing of dnsmasq DHCPv6
server ?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Regards,<o:p></o:p></p>
<p class="MsoNormal">Sree<span style="color:#1F497D"><o:p></o:p></span></p>
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