Re: [Dnsmasq-discuss] ignore mac address for one of the dhcp
Hi John and Geert, I think it has possible workaround with dnsmasq 2.81 release. Since commit 52ec7836139[1], it is possible to define dhcp-host with a tag. Therefore it should work defining the host with mac address of your switch differently for both interfaces. Have not tested it on any my setup however. If you do, please let us know. I were unable to find version of used dnsmasq. Examples are below in Geert's text. 1. http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=52ec7836139e7a11374971905e5ac0d2d02e32c0 On 4/13/20 4:18 PM, John Siu wrote: > On Mon, Apr 13, 2020 at 4:54 AM Geert Stappers wrote: > >> On Sun, Apr 12, 2020 at 03:14:33PM -0400, John Siu wrote: >>> I am running dnsmasq on a multiple port box. Following are dhcp config >> for >>> the lan and dmz ports: >>> >>> --- >>> >>> ## LAN >>> dhcp-range=tag:lan,::1,constructor:lan,ra-names,72h # IPv6 >>> dhcp-range=tag:lan,172.16.168.130,172.16.168.250,72h # IPv4 >>> dhcp-option=tag:lan,option:router,172.16.168.1 # option 3 default gw >>> dhcp-option=tag:lan,option:dns-server,172.16.168.1 >>> >>> ## DMZ >>> dhcp-range=tag:dmz,::1,constructor:dmz,ra-names,72h # IPv6 >>> dhcp-range=tag:dmz,10.10.10.100,10.10.10.120,72h # IPv4 >>> dhcp-option=tag:dmz,option:router,10.10.10.1 # option 3 default gw >>> dhcp-option=tag:dmz,option:dns-server,10.10.10.1 >>> >>> --- >>> >>> They work correctly for network connected to those ports. >> >> I wonder how. >> >> I mean: The provided information looks incomplete to me. >> Might be due an attempt to make the config more generic. >> >> >> > Following is the complete 92-dhcp.conf file I am using. It is not generic. > I have interface name "lan" and "dmz" setup in network config. > --- > log-dhcp > quiet-dhcp > quiet-dhcp6 > quiet-ra > > enable-ra > > ## LAN > dhcp-range=tag:lan,::1,constructor:lan,ra-names,72h # IPv6 > dhcp-range=tag:lan,172.16.168.130,172.16.168.250,72h # IPv4 > dhcp-option=tag:lan,option:router,172.16.168.1 # option 3 default gw > dhcp-option=tag:lan,option:dns-server,172.16.168.1 # option 6 dns > #dhcp-option=tag:lan,option:ntp-server,172.16.168.1 dhcp-host=tag:lan,01:00:18:4D:C0:3F:0E,172.16.168.251,12h > > ## DMZ > dhcp-range=tag:dmz,::1,constructor:dmz,ra-names,72h # IPv6 > dhcp-range=tag:dmz,10.10.10.100,10.10.10.120,72h # IPv4 > dhcp-option=tag:dmz,option:router,10.10.10.1 # option 3 default gw > dhcp-option=tag:dmz,option:dns-server,10.10.10.1 # option 6 dns > #dhcp-option=tag:dmz,option:ntp-server,10.10.10.1 dhcp-host=tag:dmz,01:00:18:4D:C0:3F:0E,ignore > > ## Lease > dhcp-hostsfile=/etc/dnsmasq.d/extra/dhcp.hosts > dhcp-leasefile=/etc/dnsmasq.d/extra/dhcp.lease > --- > >> However, I am having issue with the switch which connect to both dmz >>> and lan ports with different VLANs. As those VLAN ports share the same >>> mac address, sometimes the switch will pick up IP from the lan side, >>> and sometimes from the dmz side. >>> >>> How can I make dnsmasq only serve IP on the lan side for this specific >> mac >>> address? >> >> Tell more about what you have. >> >> The switch is a Netgear GS908E. It has 8 ports. I setup 2 vlan, one for > dmz, one for lan. So there is one cable from my server dmz port to the dmz > vlan, same for lan. The switch is configure to use dhcp for its ip. > However, it requests dhcp from all ports. As a result, sometime it pick up > 172.x.x.x, and sometimes it pickup 10.x.x.x address. > > >> Regards >> Geert Stappers >> -- >> Silence is hard to parse Regards, Petr -- Petr Menšík Software Engineer Red Hat, http://www.redhat.com/ email: pemen...@redhat.com PGP: DFCF908DB7C87E8E529925BC4931CA5B6C9FC5CB ___ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
Re: [Dnsmasq-discuss] ignore mac address for one of the dhcp
On Tue, Apr 14, 2020 at 03:05:38AM -0400, John Siu wrote: > On Mon, Apr 13, 2020 at 12:15 PM Geert Stappers wrote: > > On Mon, Apr 13, 2020 at 10:18:31AM -0400, John Siu wrote: > > > On Mon, Apr 13, 2020 at 4:54 AM Geert Stappers wrote: > > > > On Sun, Apr 12, 2020 at 03:14:33PM -0400, John Siu wrote: > > > > > I am running dnsmasq on a multiple port box. Following are dhcp config > > > > > for the lan and dmz ports: > > > > > > > > > > --- ... complete version follows ... > > > > > --- > > > > > > > > > > They work correctly for network connected to those ports. > > > > > > > > I wonder how. > > > > > > > > I mean: The provided information looks incomplete to me. > > > > Might be due an attempt to make the config more generic. > > > > > > > > > > > > > > > Following is the complete 92-dhcp.conf file I am using. It is not generic. > > > I have interface name "lan" and "dmz" setup in network config. > > > > Ah > > > > > --- > > > log-dhcp > > > quiet-dhcp > > > quiet-dhcp6 > > > quiet-ra > > > > > > enable-ra > > > > > > ## LAN > > > dhcp-range=tag:lan,::1,constructor:lan,ra-names,72h # IPv6 > > > dhcp-range=tag:lan,172.16.168.130,172.16.168.250,72h # IPv4 > > > dhcp-option=tag:lan,option:router,172.16.168.1 # option 3 default gw > > > dhcp-option=tag:lan,option:dns-server,172.16.168.1 # option 6 dns > > > #dhcp-option=tag:lan,option:ntp-server,172.16.168.1 > > > > > > ## DMZ > > > dhcp-range=tag:dmz,::1,constructor:dmz,ra-names,72h # IPv6 > > > dhcp-range=tag:dmz,10.10.10.100,10.10.10.120,72h # IPv4 > > > dhcp-option=tag:dmz,option:router,10.10.10.1 # option 3 default gw > > > dhcp-option=tag:dmz,option:dns-server,10.10.10.1 # option 6 dns > > > #dhcp-option=tag:dmz,option:ntp-server,10.10.10.1 > > > > > > ## Lease > > > dhcp-hostsfile=/etc/dnsmasq.d/extra/dhcp.hosts > > > dhcp-leasefile=/etc/dnsmasq.d/extra/dhcp.lease > > > --- > > > > > > > > However, I am having issue with the switch which connect to both dmz > > > > > and lan ports with different VLANs. As those VLAN ports share the same > > > > > mac address, sometimes the switch will pick up IP from the lan side, > > > > > and sometimes from the dmz side. > > > > > > > > > > How can I make dnsmasq only serve IP on the lan side for this > > > > > specific mac > > > > > address? > > > > > > > > Tell more about what you have. > > > > > > > The switch is a Netgear GS908E. It has 8 ports. I setup 2 vlan, one for > > > dmz, one for lan. So there is one cable from my server dmz port to the dmz > > > vlan, same for lan. > > > > Thanks. I'm not used to interface names like 'lan' or 'dmz'. > > I'm used to interface names like 'eth0' and 'enp181s0f2' > > > > > > > The switch is configure to use dhcp for its ip. > > > > OK, Acknowledge. (As in "I respect your design decission" ) > > > > > > > However, it requests dhcp from all ports. As a result, sometime it pick up > > > 172.x.x.x, and sometimes it pickup 10.x.x.x address. > > > > (and that is the challenge we are facing) > > > > > > I have been reading the dnsmasq manual page (again ;-) But I could not > > find a clear solution for coping with duplicate MAC-addresses. > > > > The is `--dhcp-ignore=tag:...` no use in this case. > > > > > > Idea (wild idea?) > > > > dhcp-host:01:00:18:4D:C0:3F:0E,172.16.168.251,12h > > > > In other words: Make a "static reserveration" for the swith in LAN > > > > I tried , also with tag:lan, and set:lan, > the switch will still pick up 10.x.x.x address. > Acknowledge.And thanks for reporting back. I see no solution to the problem at dnsmasq end. My advice is to re-consider why the switch must get all of it's IP addresses through DHCP. Regards Geert Stappers -- Silence is hard to parse ___ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
Re: [Dnsmasq-discuss] ignore mac address for one of the dhcp
On Mon, Apr 13, 2020 at 12:15 PM Geert Stappers wrote: > On Mon, Apr 13, 2020 at 10:18:31AM -0400, John Siu wrote: > > On Mon, Apr 13, 2020 at 4:54 AM Geert Stappers wrote: > > > On Sun, Apr 12, 2020 at 03:14:33PM -0400, John Siu wrote: > > > > I am running dnsmasq on a multiple port box. Following are dhcp > config > > > > for the lan and dmz ports: > > > > > > > > --- > > > > > > > > ## LAN > > > > dhcp-range=tag:lan,::1,constructor:lan,ra-names,72h # IPv6 > > > > dhcp-range=tag:lan,172.16.168.130,172.16.168.250,72h # IPv4 > > > > dhcp-option=tag:lan,option:router,172.16.168.1 # option 3 default gw > > > > dhcp-option=tag:lan,option:dns-server,172.16.168.1 > > > > > > > > ## DMZ > > > > dhcp-range=tag:dmz,::1,constructor:dmz,ra-names,72h # IPv6 > > > > dhcp-range=tag:dmz,10.10.10.100,10.10.10.120,72h # IPv4 > > > > dhcp-option=tag:dmz,option:router,10.10.10.1 # option 3 default gw > > > > dhcp-option=tag:dmz,option:dns-server,10.10.10.1 > > > > > > > > --- > > > > > > > > They work correctly for network connected to those ports. > > > > > > I wonder how. > > > > > > I mean: The provided information looks incomplete to me. > > > Might be due an attempt to make the config more generic. > > > > > > > > > > > Following is the complete 92-dhcp.conf file I am using. It is not > generic. > > I have interface name "lan" and "dmz" setup in network config. > > Ah > > > --- > > log-dhcp > > quiet-dhcp > > quiet-dhcp6 > > quiet-ra > > > > enable-ra > > > > ## LAN > > dhcp-range=tag:lan,::1,constructor:lan,ra-names,72h # IPv6 > > dhcp-range=tag:lan,172.16.168.130,172.16.168.250,72h # IPv4 > > dhcp-option=tag:lan,option:router,172.16.168.1 # option 3 default gw > > dhcp-option=tag:lan,option:dns-server,172.16.168.1 # option 6 dns > > #dhcp-option=tag:lan,option:ntp-server,172.16.168.1 > > > > ## DMZ > > dhcp-range=tag:dmz,::1,constructor:dmz,ra-names,72h # IPv6 > > dhcp-range=tag:dmz,10.10.10.100,10.10.10.120,72h # IPv4 > > dhcp-option=tag:dmz,option:router,10.10.10.1 # option 3 default gw > > dhcp-option=tag:dmz,option:dns-server,10.10.10.1 # option 6 dns > > #dhcp-option=tag:dmz,option:ntp-server,10.10.10.1 > > > > ## Lease > > dhcp-hostsfile=/etc/dnsmasq.d/extra/dhcp.hosts > > dhcp-leasefile=/etc/dnsmasq.d/extra/dhcp.lease > > --- > > > > > > However, I am having issue with the switch which connect to both dmz > > > > and lan ports with different VLANs. As those VLAN ports share the > same > > > > mac address, sometimes the switch will pick up IP from the lan side, > > > > and sometimes from the dmz side. > > > > > > > > How can I make dnsmasq only serve IP on the lan side for this > specific mac > > > > address? > > > > > > Tell more about what you have. > > > > > The switch is a Netgear GS908E. It has 8 ports. I setup 2 vlan, one for > > dmz, one for lan. So there is one cable from my server dmz port to the > dmz > > vlan, same for lan. > > Thanks. I'm not used to interface names like 'lan' or 'dmz'. > I'm used to interface names like 'eth0' and 'enp181s0f2' > > > > The switch is configure to use dhcp for its ip. > > OK, Acknowledge. (As in "I respect your design decission" ) > > > > However, it requests dhcp from all ports. As a result, sometime it pick > up > > 172.x.x.x, and sometimes it pickup 10.x.x.x address. > > (and that is the challenge we are facing) > > > I have been reading the dnsmasq manual page (again ;-) But I could not > find a clear solution for coping with duplicate MAC-addresses. > > The is `--dhcp-ignore=tag:...` no use in this case. > > > Idea (wild idea?) > > dhcp-host:01:00:18:4D:C0:3F:0E,172.16.168.251,12h > > I tried , also with tag:lan, and set:lan, the switch will still pick up 10.x.x.x address. > > In other words: Make a "static reserveration" for the swith in LAN > > > > > Regards > Geert Stappers > -- > Silence is hard to parse > > ___ > Dnsmasq-discuss mailing list > Dnsmasq-discuss@lists.thekelleys.org.uk > http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss > ___ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
Re: [Dnsmasq-discuss] ignore mac address for one of the dhcp
On Mon, Apr 13, 2020 at 10:18:31AM -0400, John Siu wrote: > On Mon, Apr 13, 2020 at 4:54 AM Geert Stappers wrote: > > On Sun, Apr 12, 2020 at 03:14:33PM -0400, John Siu wrote: > > > I am running dnsmasq on a multiple port box. Following are dhcp config > > > for the lan and dmz ports: > > > > > > --- > > > > > > ## LAN > > > dhcp-range=tag:lan,::1,constructor:lan,ra-names,72h # IPv6 > > > dhcp-range=tag:lan,172.16.168.130,172.16.168.250,72h # IPv4 > > > dhcp-option=tag:lan,option:router,172.16.168.1 # option 3 default gw > > > dhcp-option=tag:lan,option:dns-server,172.16.168.1 > > > > > > ## DMZ > > > dhcp-range=tag:dmz,::1,constructor:dmz,ra-names,72h # IPv6 > > > dhcp-range=tag:dmz,10.10.10.100,10.10.10.120,72h # IPv4 > > > dhcp-option=tag:dmz,option:router,10.10.10.1 # option 3 default gw > > > dhcp-option=tag:dmz,option:dns-server,10.10.10.1 > > > > > > --- > > > > > > They work correctly for network connected to those ports. > > > > I wonder how. > > > > I mean: The provided information looks incomplete to me. > > Might be due an attempt to make the config more generic. > > > > > > > Following is the complete 92-dhcp.conf file I am using. It is not generic. > I have interface name "lan" and "dmz" setup in network config. Ah > --- > log-dhcp > quiet-dhcp > quiet-dhcp6 > quiet-ra > > enable-ra > > ## LAN > dhcp-range=tag:lan,::1,constructor:lan,ra-names,72h # IPv6 > dhcp-range=tag:lan,172.16.168.130,172.16.168.250,72h # IPv4 > dhcp-option=tag:lan,option:router,172.16.168.1 # option 3 default gw > dhcp-option=tag:lan,option:dns-server,172.16.168.1 # option 6 dns > #dhcp-option=tag:lan,option:ntp-server,172.16.168.1 > > ## DMZ > dhcp-range=tag:dmz,::1,constructor:dmz,ra-names,72h # IPv6 > dhcp-range=tag:dmz,10.10.10.100,10.10.10.120,72h # IPv4 > dhcp-option=tag:dmz,option:router,10.10.10.1 # option 3 default gw > dhcp-option=tag:dmz,option:dns-server,10.10.10.1 # option 6 dns > #dhcp-option=tag:dmz,option:ntp-server,10.10.10.1 > > ## Lease > dhcp-hostsfile=/etc/dnsmasq.d/extra/dhcp.hosts > dhcp-leasefile=/etc/dnsmasq.d/extra/dhcp.lease > --- > > > > However, I am having issue with the switch which connect to both dmz > > > and lan ports with different VLANs. As those VLAN ports share the same > > > mac address, sometimes the switch will pick up IP from the lan side, > > > and sometimes from the dmz side. > > > > > > How can I make dnsmasq only serve IP on the lan side for this specific mac > > > address? > > > > Tell more about what you have. > > > The switch is a Netgear GS908E. It has 8 ports. I setup 2 vlan, one for > dmz, one for lan. So there is one cable from my server dmz port to the dmz > vlan, same for lan. Thanks. I'm not used to interface names like 'lan' or 'dmz'. I'm used to interface names like 'eth0' and 'enp181s0f2' > The switch is configure to use dhcp for its ip. OK, Acknowledge. (As in "I respect your design decission" ) > However, it requests dhcp from all ports. As a result, sometime it pick up > 172.x.x.x, and sometimes it pickup 10.x.x.x address. (and that is the challenge we are facing) I have been reading the dnsmasq manual page (again ;-) But I could not find a clear solution for coping with duplicate MAC-addresses. The is `--dhcp-ignore=tag:...` no use in this case. Idea (wild idea?) dhcp-host:01:00:18:4D:C0:3F:0E,172.16.168.251,12h In other words: Make a "static reserveration" for the swith in LAN Regards Geert Stappers -- Silence is hard to parse ___ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
Re: [Dnsmasq-discuss] ignore mac address for one of the dhcp
On Mon, Apr 13, 2020 at 4:54 AM Geert Stappers wrote: > On Sun, Apr 12, 2020 at 03:14:33PM -0400, John Siu wrote: > > I am running dnsmasq on a multiple port box. Following are dhcp config > for > > the lan and dmz ports: > > > > --- > > > > ## LAN > > dhcp-range=tag:lan,::1,constructor:lan,ra-names,72h # IPv6 > > dhcp-range=tag:lan,172.16.168.130,172.16.168.250,72h # IPv4 > > dhcp-option=tag:lan,option:router,172.16.168.1 # option 3 default gw > > dhcp-option=tag:lan,option:dns-server,172.16.168.1 > > > > ## DMZ > > dhcp-range=tag:dmz,::1,constructor:dmz,ra-names,72h # IPv6 > > dhcp-range=tag:dmz,10.10.10.100,10.10.10.120,72h # IPv4 > > dhcp-option=tag:dmz,option:router,10.10.10.1 # option 3 default gw > > dhcp-option=tag:dmz,option:dns-server,10.10.10.1 > > > > --- > > > > They work correctly for network connected to those ports. > > I wonder how. > > I mean: The provided information looks incomplete to me. > Might be due an attempt to make the config more generic. > > > Following is the complete 92-dhcp.conf file I am using. It is not generic. I have interface name "lan" and "dmz" setup in network config. --- log-dhcp quiet-dhcp quiet-dhcp6 quiet-ra enable-ra ## LAN dhcp-range=tag:lan,::1,constructor:lan,ra-names,72h # IPv6 dhcp-range=tag:lan,172.16.168.130,172.16.168.250,72h # IPv4 dhcp-option=tag:lan,option:router,172.16.168.1 # option 3 default gw dhcp-option=tag:lan,option:dns-server,172.16.168.1 # option 6 dns #dhcp-option=tag:lan,option:ntp-server,172.16.168.1 ## DMZ dhcp-range=tag:dmz,::1,constructor:dmz,ra-names,72h # IPv6 dhcp-range=tag:dmz,10.10.10.100,10.10.10.120,72h # IPv4 dhcp-option=tag:dmz,option:router,10.10.10.1 # option 3 default gw dhcp-option=tag:dmz,option:dns-server,10.10.10.1 # option 6 dns #dhcp-option=tag:dmz,option:ntp-server,10.10.10.1 ## Lease dhcp-hostsfile=/etc/dnsmasq.d/extra/dhcp.hosts dhcp-leasefile=/etc/dnsmasq.d/extra/dhcp.lease --- > However, I am having issue with the switch which connect to both dmz > > and lan ports with different VLANs. As those VLAN ports share the same > > mac address, sometimes the switch will pick up IP from the lan side, > > and sometimes from the dmz side. > > > > How can I make dnsmasq only serve IP on the lan side for this specific > mac > > address? > > Tell more about what you have. > > The switch is a Netgear GS908E. It has 8 ports. I setup 2 vlan, one for dmz, one for lan. So there is one cable from my server dmz port to the dmz vlan, same for lan. The switch is configure to use dhcp for its ip. However, it requests dhcp from all ports. As a result, sometime it pick up 172.x.x.x, and sometimes it pickup 10.x.x.x address. > Regards > Geert Stappers > -- > Silence is hard to parse > > ___ > Dnsmasq-discuss mailing list > Dnsmasq-discuss@lists.thekelleys.org.uk > http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss > ___ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
Re: [Dnsmasq-discuss] ignore mac address for one of the dhcp
On Sun, Apr 12, 2020 at 03:14:33PM -0400, John Siu wrote: > I am running dnsmasq on a multiple port box. Following are dhcp config for > the lan and dmz ports: > > --- > > ## LAN > dhcp-range=tag:lan,::1,constructor:lan,ra-names,72h # IPv6 > dhcp-range=tag:lan,172.16.168.130,172.16.168.250,72h # IPv4 > dhcp-option=tag:lan,option:router,172.16.168.1 # option 3 default gw > dhcp-option=tag:lan,option:dns-server,172.16.168.1 > > ## DMZ > dhcp-range=tag:dmz,::1,constructor:dmz,ra-names,72h # IPv6 > dhcp-range=tag:dmz,10.10.10.100,10.10.10.120,72h # IPv4 > dhcp-option=tag:dmz,option:router,10.10.10.1 # option 3 default gw > dhcp-option=tag:dmz,option:dns-server,10.10.10.1 > > --- > > They work correctly for network connected to those ports. I wonder how. I mean: The provided information looks incomplete to me. Might be due an attempt to make the config more generic. > However, I am having issue with the switch which connect to both dmz > and lan ports with different VLANs. As those VLAN ports share the same > mac address, sometimes the switch will pick up IP from the lan side, > and sometimes from the dmz side. > > How can I make dnsmasq only serve IP on the lan side for this specific mac > address? Tell more about what you have. Regards Geert Stappers -- Silence is hard to parse ___ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss
[Dnsmasq-discuss] ignore mac address for one of the dhcp
I am running dnsmasq on a multiple port box. Following are dhcp config for the lan and dmz ports: --- ## LAN dhcp-range=tag:lan,::1,constructor:lan,ra-names,72h # IPv6 dhcp-range=tag:lan,172.16.168.130,172.16.168.250,72h # IPv4 dhcp-option=tag:lan,option:router,172.16.168.1 # option 3 default gw dhcp-option=tag:lan,option:dns-server,172.16.168.1 ## DMZ dhcp-range=tag:dmz,::1,constructor:dmz,ra-names,72h # IPv6 dhcp-range=tag:dmz,10.10.10.100,10.10.10.120,72h # IPv4 dhcp-option=tag:dmz,option:router,10.10.10.1 # option 3 default gw dhcp-option=tag:dmz,option:dns-server,10.10.10.1 --- They work correctly for network connected to those ports. However, I am having issue with the switch which connect to both dmz and lan ports with different VLANs. As those VLAN ports share the same mac address, sometimes the switch will pick up IP from the lan side, and sometimes from the dmz side. How can I make dnsmasq only serve IP on the lan side for this specific mac address? Thank you! ___ Dnsmasq-discuss mailing list Dnsmasq-discuss@lists.thekelleys.org.uk http://lists.thekelleys.org.uk/mailman/listinfo/dnsmasq-discuss