Can you share /etc/dnsmasq.conf and /etc/dnsmasq.d/*?

AND the output of "ip a"?

-Wei

在 2023年10月19日星期四,Cristian Ciobanu <cristian.c@istream.today> 写道:

> Hi Wei,
>
>
>
> I use shared network without security groups. I did a cleanup and same
> issue after. I have shared network and advanced in multiple different
> zones, but only in one zone I have this issue. I think it started suddenly
> after a deploy.
>
> Here is a tcpdump from router, looks how ignore still. I turn off and
> change to a different IP, and then I turn on and the IP is allocated.
>
> Request with ignored request for IPs from this range 23.227.xxx.32/27:
>
> 19:44:20.453093 1e:00:d5:00:00:79 > ff:ff:ff:ff:ff:ff, ethertype IPv4
> (0x0800), length 334: 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request
> from 1e:00:d5:00:00:79, length 292
>
> 19:44:24.319207 1e:00:d5:00:00:79 > ff:ff:ff:ff:ff:ff, ethertype IPv4
> (0x0800), length 334: 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request
> from 1e:00:d5:00:00:79, length 292
>
> 19:44:28.051571 1e:00:d5:00:00:79 > ff:ff:ff:ff:ff:ff, ethertype IPv4
> (0x0800), length 334: 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request
> from 1e:00:d5:00:00:79, length 292
>
> 19:44:35.599400 1e:00:d5:00:00:79 > ff:ff:ff:ff:ff:ff, ethertype IPv4
> (0x0800), length 334: 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request
> from 1e:00:d5:00:00:79, length 292
>
> 19:44:52.334213 1e:00:d5:00:00:79 > ff:ff:ff:ff:ff:ff, ethertype IPv4
> (0x0800), length 334: 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request
> from 1e:00:d5:00:00:79, length 292
>
>
>
>
>
> And same instance after I turn off and change again the IP/ turn on. Here
> works:
>
>
>
> 19:48:38.224138 1e:00:d5:00:00:79 > ff:ff:ff:ff:ff:ff, ethertype IPv4
> (0x0800), length 334: 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request
> from 1e:00:d5:00:00:79, length 292
>
> 19:48:38.224432 1e:00:19:00:00:64 > 1e:00:d5:00:00:79, ethertype IPv4
> (0x0800), length 352: 23.29.xxx.130.67 > 23.29.xxx.131.68: BOOTP/DHCP,
> Reply, length 310
>
> 19:48:38.235802 1e:00:d5:00:00:79 > ff:ff:ff:ff:ff:ff, ethertype IPv4
> (0x0800), length 346: 0.0.0.0.68 > 255.255.255.255.67: BOOTP/DHCP, Request
> from 1e:00:d5:00:00:79, length 304
>
> 19:48:38.237614 1e:00:19:00:00:64 > 1e:00:d5:00:00:79, ethertype IPv4
> (0x0800), length 352: 23.29.xxx.130.67 > 23.29.xxx.131.68: BOOTP/DHCP,
> Reply, length 310
>
>
> So, it is quite strange because I am ignoring multiple IPs. Now, if I
> restart VMs which have IPs from this range 23.227.xxx.32/27, they are going
> to be ignored at boot to get the IP. I have already tested this with a few.
> I also have this issue with a different class.
>
>
> Thank you,
>
> Cristian
>
>
>
>
>
> On Thu, Oct 19, 2023, 20:45 Wei ZHOU <ustcweiz...@gmail.com <mailto:
> ustcweiz...@gmail.com> > wrote:
>
> Hi,
>
> Do you use shared network with security groups?  Can you restart network
> with cleanup and retry?
>
> -Wei
>
> 在 2023年10月19日星期四, <cristian.c@istream.today> 写道:
>
> > Hello,
> >
> >
> >
> >   I'm experiencing strange issue, the Guest router started today to
> ignore
> > the requests for specific IP class.
> >
> > Oct 19 16:22:49 dnsmasq-dhcp[24437]: 49204406 available DHCP subnet:
> > 217.79.xxx.129/255.255.255.128 <http://255.255.255.128>
> >
> > Oct 19 16:22:49 dnsmasq-dhcp[24437]: 49204406 available DHCP subnet:
> > 66.206.xxx.179/255.255.255.248 <http://255.255.255.248>
> >
> > Oct 19 16:22:49 dnsmasq-dhcp[24437]: 49204406 client provides name:
> ubuntu
> >
> > Oct 19 16:22:49 dnsmasq-dhcp[24437]: 49204406 DHCPDISCOVER(eth0)
> > 1e:00:30:00:04:67 ignored
> >
> > Oct 19 16:23:53 dnsmasq-dhcp[24437]: 49204406 available DHCP subnet:
> > 217.79.xxx.129/255.255.255.128 <http://255.255.255.128>
> >
> > Oct 19 16:23:53 dnsmasq-dhcp[24437]: 49204406 available DHCP subnet:
> > 66.206.xxx.179/255.255.255.248 <http://255.255.255.248>
> >
> > Oct 19 16:23:53 dnsmasq-dhcp[24437]: 49204406 client provides name:
> ubuntu
> >
> > Oct 19 16:23:53 dnsmasq-dhcp[24437]: 49204406 DHCPDISCOVER(eth0)
> > 1e:00:30:00:04:67 ignored
> >
> >
> >
> >
> >
> > root@r-6137-VMAMS:~# cat /etc/dhcphosts.txt | grep "1e:00:30:00:04:67"
> >
> > 1e:00:30:00:04:67,23.227.xxx.54,testignore001,infinite
> >
> >
> >
> > root@r-6137-VMAMS:~# cat /etc/dhcphosts.txt | wc -l
> >
> > 144
> >
> >
> >
> > If I reboot any VM with an IP from this class 23.227.xxx.129, which was
> > allocated without any issue before, after reboot is I'm going to see
> > ignored
> > and is going to be left without IP assigned.
> >
> > Setup: ACS 4.18.1 upgrade from previous version with VMware.
> >
> > Any suggestions?
> >
> > Thank you.
> >
> >
>
>

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