Re: [Dnsmasq-discuss] dnsmasq 2.78 is failing to respond to dhcpv6 requests forwarded via relay agent

[Sandeep K M]

Hi Simon,

Thanks a lot for your prompt reply.

Attached are the packet captures:

1. Packets exchanged between client and relay (client-relay.pcap)
2.  Packets exchanged between relay and server (relay-server.pcap)
3. strace of dnsmasq (dnsmasq.trace)

Please let me know if any other information is required.

I am not an expert in reading pcap's or strace but I do see in the attached
strace i.e. dnsmasq.trace file that ""DHCPADVERTISE" message is being
written to the same interface from which it received the "DHCPSOLICIT"
packet. But still it is fails to go out of that interface.

06:04:09.371741 write(2, "DHCPADVERTISE(m1s1p7) 2020::14
00:01:00:01:23:c1:b0:e2:00:50:56:bd:09:fb ", 73) = 73

Any help on this would be greatly appreciated. Also is there any example
configuration of dnsmasq dhcpv6 working with relay ? Any reference would be
of great help.

Thanks
-Sandeep

On Fri, Jan 4, 2019 at 3:21 AM Simon Kelley  wrote:

> It would be useful to get full packet dumps rather than just tcpdump
> output.
>
> It would also be useful to run dnsmasq under strace and see what
> syscalls it's making: that would tell use where the reply might be going.
>
>
> Cheers,
>
> Simon.
>
>
>
>
> On 03/01/2019 07:41, Sandeep K M wrote:
> > Hi All,
> >
> >
> >
> > I have a simple setup with a relay agent as shown below:
> >
> >
> > +--+-+
> > |dnsmasq server |
> >
> > | (ubuntu) |
> >
> > +-+
> > | m1s1p7 (1040::2/120)
> > | (IP route : 2020::/120 via 1040::1 dev m1s1p7  proto
> > static  metric 512  pref medium)
> > |
> > |
> > | 1/1/2 (1040::1/120)
> > +--++
> > |Switch|
> > | (Relay Agent )  |
> > +---+
> > | 1/1/1 (2020::1/120)
> > |
> > |
> > | eth1
> > +--+--+
> > | Client (Ubuntu)  |
> > +--+
> >
> >
> > It is exactly the same as explained in the video :
> > https://www.youtube.com/watch?v=2Lt1aXpCzvQ
> >
> >
> > Whenever the client is requesting an IPv6 address dnsmasq is failing to
> > respond with “DHCPADVERTISE” message. The “DHCPADVERTISE” has not been
> > sent via the interface. The tcpdump clearly shows that “DHCPADVERTISE”
> > message has not gone through the interface (m1s1p7), its only showing
> > the “DHCPSOLICIT” message which has been received:
> >
> >
> >
> > /root@8320:~# tcpdump -i *m1s1p7* udp port 547 or 546 -vvv -n/
> >
> > //
> >
> > /tcpdump: listening on m1s1p7, link-type EN10MB (Ethernet), capture size
> > 262144 bytes/
> >
> > //
> >
> > / /
> >
> > //
> >
> > /06:32:37.214798 IP6 (hlim 64, next-header UDP (17) payload length: 110)
> > 2020::1.547 > 1040::2.547: [udp sum ok] dhcp6 relay-fwd
> > (linkaddr=2020::1 peeraddr=fe80::250:56ff:febd:7c93 (relay-message
> > (*dhcp6 solicit* (xid=1894f2 (client-ID hwaddr/time type 1 time
> > 599811159 005056bd7c93) (option-request DNS-server DNS-search-list
> > Client-FQDN SNTP-servers) (elapsed-time 0) (IA_NA IAID:1455258771
> > T1:3600 T2:5400))) (interface-ID 0024...))/
> >
> >
> >
> > But the dnsmasq logs shows that it is trying to send the “DHCPADVERTISE”
> > message but for some reason it’s not been sent via the interface
> *m1s1p7. *
> >
> > * *
> >
> > **
> >
> > /root@8320:~# tail -f /var/log/dnsmasq_swns/dnsmasq6.log/
> >
> > //
> >
> > /Jan  3 06:11:20 dnsmasq[4151]: started, version 2.78 DNS disabled/
> >
> > //
> >
> > /Jan  3 06:11:20 dnsmasq[4151]: compile time options: IPv6 GNU-getopt
> > no-DBus no-i18n no-IDN DHCP DHCPv6 no-Lua TFTP no-conntrack ipset auth
> > no-DNSSEC loop-detect inotify/
> >
> > /Jan  3 06:11:20 dnsmasq-dhcp[4151]: DHCPv6, IP range 2020::10 --
> > 2020::20, lease time 1h/
> >
> > /Jan  3 06:12:38 dnsmasq-dhcp[4151]: DHCPSOLICIT(m1s1p7)
> > 00:01:00:01:23:c0:64:57:00:50:56:bd:7c:93/
> >
> > //
> >
> > /Jan  3 06:12:38 dnsmasq-dhcp[4151]: DHCPADVERTISE(m1s1p7) 2020::12
> > 00:01:00:01:23:c0:64:57:00:50:56:bd:7c:93/
> >
> >
> >
> > *Does anyone has any clue on what is going on here ? Am I missing
> > something ? Here is my dnsmasq config file contents:*
> >
> >
> >
> > /root@8320:~# cat /var/run/dnsmasq_swns/dnsmasq6.conf/
> >
> > //
> >
> > /enable-ra/
> >
> > //
> >
> > /log-dhcp/
> >
> > //
> >
> > /log-queries/
> >
> > //
> >
> > /log-facility=/var/log/dnsmasq_swns/dnsmasq6.log/
> >
> > //
> >
> > /port=0/
> >
> > //
> >
> > /dhcp-script=/usr/bin/dhcp_server_leases/
> >
> > //
> >
> > /leasefile-ro/
> >
> > //
> >
> > /dhcp-lease-max=64000/
> >
> > //
> >
> > /dhcp-range=set:default+test,2020::10,2020::20,120/
> >
> >
> >
> > Thanks
> >
> > -Sandeep
> >
> >
> >
> > ___
> > Dnsmasq-discuss mailing list
> > Dnsmasq-discuss@lists.thekelleys.org.uk
> > http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
> >
>
> 

Re: [Dnsmasq-discuss] what do the contents of /var/lib/misc/dnsmasq.leases mean?

[Sean Kelly]

Sure! It's a long story, but perhaps interesting. I got a quad core 2.42
GHz, 8GB ram 128GB SSD WIFI, dual nic, Thin Mini PC
 off Amazon that I had
intended to use as my home router running pfsense. I have really crappy DSL
at home with an average speed of 1.5Mbps. I have a tablet with 5G and
"unlimited" data that I can tether through USB that occasionally gets
deprioritized. (TMobile aint great but it beats everything else) So my plan
was a router that could switch between DSL and tethered tablet and provide
a hopefully better home internet environment.

The device has USB, two nics and wifi. When I went to install pfsense I
discovered that the wifi and tethered tablet drivers were missing and not
being a linux kernel guy it sounded like a daunting task to get that
working. I had a ubuntu desktop live usb stick that I was using to get
hardware info for the pfsense installation and it seemed to work great. So
I just installed that. I've only ever used linux in vms as servers so this
was also an opportunity to learn a new desktop environment. Aside from the
router, I also have several smart switches
 and
three wireless access points
. The
router's wifi didn't cover the whole house and amazon echo's intercom
feature was too cool not to utilize. Long term, I'd like to isolate the
access points on their own vlan (practice good security etc) but that is in
the backlog for after I get the basic configuration working.

So this is where things get interesting. All my linux friends told me I
should start ripping parts out of my ubuntu distro and just use iptables,
shorewall, dhcd, etc. I used to work on Windows at Microsoft and it didn't
make sense to me that Ubuntu developers would not make the best choices of
technologies when building Ubuntu and all ripping out services and swimming
upstream would buy me is that opportunity to relearn why the Ubuntu
developers made the choices they made. So instead of fighting the system I
would embrace it and learn to use it as best as I could. I acknowledge this
is cathedral thinking in the bazaar but I feel like I'm really close to
getting it all working.

Anyway, when I configure network manager to share my wifi and one of my
nics, it runs three copies of dnsmasq like so.

/usr/sbin/dnsmasq
  --no-resolv
  --keep-in-foreground
  --no-hosts
  --bind-interfaces
  --pid-file=/var/run/NetworkManager/dnsmasq.pid
  --listen-address=127.0.1.1
  --cache-size=0
  --conf-file=/dev/null
  --proxy-dnssec
  --enable-dbus=org.freedesktop.NetworkManager.dnsmasq
  --conf-dir=/etc/NetworkManager/dnsmasq.d

/usr/sbin/dnsmasq
  --conf-file
  --no-hosts
  --keep-in-foreground
  --bind-interfaces
  --except-interface=lo
  --clear-on-reload
  --strict-order
  --listen-address=192.168.69.1
  --dhcp-range=192.168.69.10,192.168.69.254,60m
  --dhcp-option=option:router,192.168.69.1
  --dhcp-lease-max=50
  --pid-file=/var/run/nm-dnsmasq-wlp2s0b1.pid
  --conf-dir=/etc/NetworkManager/dnsmasq-shared.d

/usr/sbin/dnsmasq
  --conf-file
  --no-hosts
  --keep-in-foreground
  --bind-interfaces
  --except-interface=lo
  --clear-on-reload
  --strict-order
  --listen-address=192.168.0.254
  --dhcp-range=192.168.0.1,192.168.0.245,60m
  --dhcp-option=option:router,192.168.0.254
  --dhcp-lease-max=50
  --pid-file=/var/run/nm-dnsmasq-enp3s0.pid
  --conf-dir=/etc/NetworkManager/dnsmasq-shared.d

The first one is for dns and I have a conf file in
/etc/NetworkManager/dnsmasq.d with the single line

cache-size=1000

The next one is for dhcp on my wifi and the last one is for dhcp on my nic.
Unfortunately they use the same conf-dir
(/etc/NetworkManager/dnsmasq-shared.d). I currently have one file there
that looks like this

#
# HUBS
dhcp-host=,192.168.0.10,den-hub
dhcp-host=,192.168.0.11,master-hub
dhcp-host=,192.168.0.12,utility-hub
dhcp-host=,192.168.0.13,gaming-hub
dhcp-host=,192.168.0.14,pantry-hub
#
# WAPS
dhcp-host=,192.168.0.20,sunroom-wap
dhcp-host=,192.168.0.21,master-wap
dhcp-host=,192.168.0.22,gaming-wap
#
# SUNROOM DEVICES
dhcp-host=,192.168.0.30,printer
dhcp-host=,192.168.0.31,laser
#
# DEN DEVICES
dhcp-host=,192.168.0.253,watchdog
#
# MASTER DEVICES
dhcp-host=,192.168.0.252,keeper,infinite
dhcp-host=,192.168.0.40,wdtv,infinite
dhcp-host=,192.168.0.148,kodi,infinite
#
# UTILITY DEVICES
#
# REC ROOM DEVICES
#
# WIRELESS DEVICES

#
# OTHER SETTINGS
#dhcp-ignore=tag:!known
dhcp-lease-max=1000

long term, I'd like to static configure all devices on my home nic and my
wireless and only to do dhcp on the vlan for guest wifi. Then I could
uncomment the dhcp-ignore line and devices would need to be explicitly
added to the conf to get access to anything on my LAN other than the
internet. I feel like if I understood tags better I might be able to figure
out how to do this. Otherwise I might need to see if I can get a PR into

Re: [Dnsmasq-discuss] dnsmasq 2.78 is failing to respond to dhcpv6 requests forwarded via relay agent

[Simon Kelley]

It would be useful to get full packet dumps rather than just tcpdump
output.

It would also be useful to run dnsmasq under strace and see what
syscalls it's making: that would tell use where the reply might be going.


Cheers,

Simon.




On 03/01/2019 07:41, Sandeep K M wrote:
> Hi All,
> 
>  
> 
> I have a simple setup with a relay agent as shown below:
> 
> 
> +--+-+
> |    dnsmasq server |
> 
> |     (ubuntu) |
> 
> +-+
>     | m1s1p7 (1040::2/120)
>             | (IP route : 2020::/120 via 1040::1 dev m1s1p7  proto
> static  metric 512  pref medium)
>             |
>     |
>     | 1/1/2 (1040::1/120)
> +--++
> |    Switch    |
> | (Relay Agent )  |
> +---+
>     | 1/1/1 (2020::1/120) 
>         |
>     | 
>     | eth1 
> +--+--+
> | Client (Ubuntu)  |
> +--+
> 
> 
> It is exactly the same as explained in the video :
> https://www.youtube.com/watch?v=2Lt1aXpCzvQ
> 
> 
> Whenever the client is requesting an IPv6 address dnsmasq is failing to
> respond with “DHCPADVERTISE” message. The “DHCPADVERTISE” has not been
> sent via the interface. The tcpdump clearly shows that “DHCPADVERTISE”
> message has not gone through the interface (m1s1p7), its only showing
> the “DHCPSOLICIT” message which has been received:
> 
>  
> 
> /root@8320:~# tcpdump -i *m1s1p7* udp port 547 or 546 -vvv -n/
> 
> //
> 
> /tcpdump: listening on m1s1p7, link-type EN10MB (Ethernet), capture size
> 262144 bytes/
> 
> //
> 
> / /
> 
> //
> 
> /06:32:37.214798 IP6 (hlim 64, next-header UDP (17) payload length: 110)
> 2020::1.547 > 1040::2.547: [udp sum ok] dhcp6 relay-fwd
> (linkaddr=2020::1 peeraddr=fe80::250:56ff:febd:7c93 (relay-message
> (*dhcp6 solicit* (xid=1894f2 (client-ID hwaddr/time type 1 time
> 599811159 005056bd7c93) (option-request DNS-server DNS-search-list
> Client-FQDN SNTP-servers) (elapsed-time 0) (IA_NA IAID:1455258771
> T1:3600 T2:5400))) (interface-ID 0024...))/
> 
>  
> 
> But the dnsmasq logs shows that it is trying to send the “DHCPADVERTISE”
> message but for some reason it’s not been sent via the interface *m1s1p7. *
> 
> * *
> 
> **
> 
> /root@8320:~# tail -f /var/log/dnsmasq_swns/dnsmasq6.log/
> 
> //
> 
> /Jan  3 06:11:20 dnsmasq[4151]: started, version 2.78 DNS disabled/
> 
> //
> 
> /Jan  3 06:11:20 dnsmasq[4151]: compile time options: IPv6 GNU-getopt
> no-DBus no-i18n no-IDN DHCP DHCPv6 no-Lua TFTP no-conntrack ipset auth
> no-DNSSEC loop-detect inotify/
> 
> /Jan  3 06:11:20 dnsmasq-dhcp[4151]: DHCPv6, IP range 2020::10 --
> 2020::20, lease time 1h/
> 
> /Jan  3 06:12:38 dnsmasq-dhcp[4151]: DHCPSOLICIT(m1s1p7)
> 00:01:00:01:23:c0:64:57:00:50:56:bd:7c:93/
> 
> //
> 
> /Jan  3 06:12:38 dnsmasq-dhcp[4151]: DHCPADVERTISE(m1s1p7) 2020::12
> 00:01:00:01:23:c0:64:57:00:50:56:bd:7c:93/
> 
>  
> 
> *Does anyone has any clue on what is going on here ? Am I missing
> something ? Here is my dnsmasq config file contents:*
> 
>  
> 
> /root@8320:~# cat /var/run/dnsmasq_swns/dnsmasq6.conf/
> 
> //
> 
> /enable-ra/
> 
> //
> 
> /log-dhcp/
> 
> //
> 
> /log-queries/
> 
> //
> 
> /log-facility=/var/log/dnsmasq_swns/dnsmasq6.log/
> 
> //
> 
> /port=0/
> 
> //
> 
> /dhcp-script=/usr/bin/dhcp_server_leases/
> 
> //
> 
> /leasefile-ro/
> 
> //
> 
> /dhcp-lease-max=64000/
> 
> //
> 
> /dhcp-range=set:default+test,2020::10,2020::20,120/
> 
>  
> 
> Thanks
> 
> -Sandeep
> 
> 
> 
> ___
> Dnsmasq-discuss mailing list
> Dnsmasq-discuss@lists.thekelleys.org.uk
> http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
> 

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Re: [Dnsmasq-discuss] [PATCH] Fix typo in ra-param man page section

[Simon Kelley]

Prodding me is fine, and has done the trick here.

In general, I'm way behind my inbox, and struggling to catch up. Moving
house is not helping :(

I will try and get to everything in the end, but I won't be offended is
people remind me.

Cheers,

Simon.


On 03/01/2019 05:49, Christian Weiske wrote:
> Hello,
> 
> 
>>  man/dnsmasq.8| 2 +-
>>  man/fr/dnsmasq.8 | 2 +-
>>  2 files changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git man/dnsmasq.8 man/dnsmasq.8
> 
> Is there anything I can do to get this patch merged?
> 

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Re: [Dnsmasq-discuss] what do the contents of /var/lib/misc/dnsmasq.leases mean?

[Simon Kelley]

The leftmost 0 means that the leases are infinite, they never expire,
which might explain why you're running out of leases.

There can be duplicate leases per MAC address, but there should never be
duplicate leases for an IP address. So I'm interested in finding out how
you've contrived this situation. Please could you share as much
information as possible about network and dnsmasq configuration?


Cheers,

Simon.


On 02/01/2019 04:01, Sean Kelly wrote:
> when I cat the file I see mutiple entries for the same MAC address, what
> does this mean?
> 
> 0 98:de:d0:bb:11:0c 192.168.0.10 * 01:98:de:d0:bb:11:0c
> 0 98:de:d0:bb:11:0c 192.168.0.10 * 01:98:de:d0:bb:11:0c
> 0 98:de:d0:2c:0e:4c 192.168.0.20 * 01:98:de:d0:2c:0e:4c
> 0 00:1a:62:01:17:cf 192.168.0.252 * 01:00:1a:62:01:17:cf
> 0 00:90:a9:6a:0b:92 192.168.0.40 * 01:00:90:a9:6a:0b:92
> 0 00:1a:62:01:17:cf 192.168.0.252 * 01:00:1a:62:01:17:cf
> 0 00:90:a9:6a:0b:92 192.168.0.40 * 01:00:90:a9:6a:0b:92
> 0 00:90:a9:6a:0b:92 192.168.0.40 * 01:00:90:a9:6a:0b:92
> 0 00:1a:62:01:17:cf 192.168.0.252 * 01:00:1a:62:01:17:cf
> 0 00:90:a9:6a:0b:92 192.168.0.40 * 01:00:90:a9:6a:0b:92
> 0 00:1a:62:01:17:cf 192.168.0.252 * 01:00:1a:62:01:17:cf
> 0 00:1a:62:01:17:cf 192.168.0.252 * 01:00:1a:62:01:17:cf
> 0 00:90:a9:6a:0b:92 192.168.0.40 * 01:00:90:a9:6a:0b:92
> 0 00:1a:62:01:17:cf 192.168.0.252 * 01:00:1a:62:01:17:cf
> 0 00:90:a9:6a:0b:92 192.168.0.40 * 01:00:90:a9:6a:0b:92
> 0 00:90:a9:6a:0b:92 192.168.0.40 * 01:00:90:a9:6a:0b:92
> 0 00:1a:62:01:17:cf 192.168.0.252 * 01:00:1a:62:01:17:cf
> 0 00:90:a9:6a:0b:92 192.168.0.40 * 01:00:90:a9:6a:0b:92
> 0 00:1a:62:01:17:cf 192.168.0.252 * 01:00:1a:62:01:17:cf
> 0 44:80:eb:95:2a:b4 192.168.0.66 * 01:44:80:eb:95:2a:b4
> 0 44:80:eb:95:2a:b4 192.168.0.66 miri-phone 01:44:80:eb:95:2a:b4
> 0 00:1a:62:01:17:cf 192.168.0.252 * 01:00:1a:62:01:17:cf
> 0 00:90:a9:6a:0b:92 192.168.0.40 * 01:00:90:a9:6a:0b:92
> 0 00:1a:62:01:17:cf 192.168.0.252 * 01:00:1a:62:01:17:cf
> 0 00:90:a9:6a:0b:92 192.168.0.40 * 01:00:90:a9:6a:0b:92
> 0 00:90:a9:6a:0b:92 192.168.0.40 * 01:00:90:a9:6a:0b:92
> 0 00:1a:62:01:17:cf 192.168.0.252 * 01:00:1a:62:01:17:cf
> 0 00:90:a9:6a:0b:92 192.168.0.40 * 01:00:90:a9:6a:0b:92
> 0 00:1a:62:01:17:cf 192.168.0.252 * 01:00:1a:62:01:17:cf
> 0 00:1a:62:01:17:cf 192.168.0.252 * 01:00:1a:62:01:17:cf
> 0 00:90:a9:6a:0b:92 192.168.0.40 * 01:00:90:a9:6a:0b:92
> 0 00:1a:62:01:17:cf 192.168.0.252 * 01:00:1a:62:01:17:cf
> 0 00:90:a9:6a:0b:92 192.168.0.40 * 01:00:90:a9:6a:0b:92
> 0 00:90:a9:6a:0b:92 192.168.0.40 * 01:00:90:a9:6a:0b:92
> 0 00:1a:62:01:17:cf 192.168.0.252 * 01:00:1a:62:01:17:cf
>  Can I trim multiple entriesor is it safe to ignore them? I just
> recently got the dnsmasq NO LEASES LEFT error and was concerned that
> these duplicate entries contributed to the dhcp-max-leases count. Can I
> delete them safely?
> 
> Go Carefully,
> 
> SeanK
> 
> ___
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> http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
> 

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[Dnsmasq-discuss] dnsmasq 2.78 is failing to respond to dhcpv6 requests forwarded via relay agent

[Sandeep K M]

Hi All,



I have a simple setup with a relay agent as shown below:


+--+-+
|dnsmasq server |

| (ubuntu) |

+-+
| m1s1p7 (1040::2/120)
| (IP route : 2020::/120 via 1040::1 dev m1s1p7  proto
static  metric 512  pref medium)
|
|
| 1/1/2 (1040::1/120)
+--++
|Switch|
| (Relay Agent )  |
+---+
| 1/1/1 (2020::1/120)
|
|
| eth1
+--+--+
| Client (Ubuntu)  |
+--+


It is exactly the same as explained in the video :
https://www.youtube.com/watch?v=2Lt1aXpCzvQ


Whenever the client is requesting an IPv6 address dnsmasq is failing to
respond with “DHCPADVERTISE” message. The “DHCPADVERTISE” has not been sent
via the interface. The tcpdump clearly shows that “DHCPADVERTISE” message
has not gone through the interface (m1s1p7), its only showing the
“DHCPSOLICIT” message which has been received:



*root@8320:~# tcpdump -i m1s1p7 udp port 547 or 546 -vvv -n*

*tcpdump: listening on m1s1p7, link-type EN10MB (Ethernet), capture size
262144 bytes*



*06:32:37.214798 IP6 (hlim 64, next-header UDP (17) payload length: 110)
2020::1.547 > 1040::2.547: [udp sum ok] dhcp6 relay-fwd (linkaddr=2020::1
peeraddr=fe80::250:56ff:febd:7c93 (relay-message (dhcp6 solicit (xid=1894f2
(client-ID hwaddr/time type 1 time 599811159 005056bd7c93) (option-request
DNS-server DNS-search-list Client-FQDN SNTP-servers) (elapsed-time 0)
(IA_NA IAID:1455258771 T1:3600 T2:5400))) (interface-ID 0024...))*



But the dnsmasq logs shows that it is trying to send the “DHCPADVERTISE”
message but for some reason it’s not been sent via the interface *m1s1p7. *



*root@8320:~# tail -f /var/log/dnsmasq_swns/dnsmasq6.log*

*Jan  3 06:11:20 dnsmasq[4151]: started, version 2.78 DNS disabled*

*Jan  3 06:11:20 dnsmasq[4151]: compile time options: IPv6 GNU-getopt
no-DBus no-i18n no-IDN DHCP DHCPv6 no-Lua TFTP no-conntrack ipset auth
no-DNSSEC loop-detect inotify*
* Jan  3 06:11:20 dnsmasq-dhcp[4151]: DHCPv6, IP range 2020::10 --
2020::20, lease time 1h*

*Jan  3 06:12:38 dnsmasq-dhcp[4151]: DHCPSOLICIT(m1s1p7)
00:01:00:01:23:c0:64:57:00:50:56:bd:7c:93*

*Jan  3 06:12:38 dnsmasq-dhcp[4151]: DHCPADVERTISE(m1s1p7) 2020::12
00:01:00:01:23:c0:64:57:00:50:56:bd:7c:93*



*Does anyone has any clue on what is going on here ? Am I missing something
? Here is my dnsmasq config file contents:*



*root@8320:~# cat /var/run/dnsmasq_swns/dnsmasq6.conf*

*enable-ra*

*log-dhcp*

*log-queries*

*log-facility=/var/log/dnsmasq_swns/dnsmasq6.log*

*port=0*

*dhcp-script=/usr/bin/dhcp_server_leases*

*leasefile-ro*

*dhcp-lease-max=64000*

*dhcp-range=set:default+test,2020::10,2020::20,120*



Thanks
-Sandeep
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