Remove named dhcpd

[jvonau]

Replacement for #3296 with net_tweeks #3264

[holta]

What aspects of this PR are most important to test?

Smoke Test on Ubuntu Server 22.04 VM: http://sprunge.us/NHMUFH?en

[jvonau]

Nothing else really, for the most part this is disabling optional features which by default would not be used unless selected. New feature is local_vars validation should these optional features be engaged by selecting install True to advise of the now unavailable option.

[jvonau]

Notes and explanation

1113 =IIAB==========================================================================
1114 COMMAND: /usr/bin/sudo journalctl -b 0 -u dnsmasq # dnsmasq log
1115
1116 Jul 17 21:26:13 box systemd[1]: Starting dnsmasq - A lightweight DHCP and caching DNS server...
1117 Jul 17 21:26:13 box dnsmasq[9156]: dnsmasq: failed to create listening socket for port 53: Address already in use
1118 Jul 17 21:26:13 box dnsmasq[9156]: failed to create listening socket for port 53: Address already in use
1119 Jul 17 21:26:13 box dnsmasq[9156]: FAILED to start up
1120 Jul 17 21:26:13 box systemd[1]: dnsmasq.service: Control process exited, code=exited, status=2/INVALIDARGUMENT
1121 Jul 17 21:26:13 box systemd[1]: dnsmasq.service: Failed with result 'exit-code'.
1122 Jul 17 21:26:13 box systemd[1]: Failed to start dnsmasq - A lightweight DHCP and caching DNS server.

This is the stock apt install of dnsmasq with issue #1306

1123 Jul 17 21:26:17 box systemd[1]: Starting dnsmasq - A lightweight DHCP and caching DNS server...
1124 Jul 17 21:26:17 box dnsmasq[9493]: started, version 2.86 cachesize 150
1125 Jul 17 21:26:17 box dnsmasq[9493]: DNS service limited to local subnets
1126 Jul 17 21:26:17 box dnsmasq[9493]: compile time options: IPv6 GNU-getopt DBus no-UBus i18n IDN2 DHCP DHCPv6 no-Lua TFTP conntrack ipset auth cryptohash DNSSEC loop-detect inotify dumpfile
1127 Jul 17 21:26:17 box dnsmasq[9493]: reading /etc/resolv.conf
1128 Jul 17 21:26:17 box dnsmasq[9493]: using nameserver 127.0.0.53#53
1129 Jul 17 21:26:17 box dnsmasq[9493]: read /etc/hosts - 5 addresses
1130 Jul 17 21:26:17 box systemd[1]: Started dnsmasq - A lightweight DHCP and caching DNS server.

Now the fix delivered in dnsmasq.yml

1131 Jul 17 21:51:26 box systemd[1]: Stopping dnsmasq - A lightweight DHCP and caching DNS server...
1132 Jul 17 21:51:26 box dnsmasq[9493]: exiting on receipt of SIGTERM
1133 Jul 17 21:51:26 box systemd[1]: dnsmasq.service: Deactivated successfully.
1134 Jul 17 21:51:26 box systemd[1]: Stopped dnsmasq - A lightweight DHCP and caching DNS server.

captive portal

1135 Jul 17 21:51:27 box systemd[1]: Starting dnsmasq - A lightweight DHCP and caching DNS server...
1136 Jul 17 21:51:27 box dnsmasq[41230]: started, version 2.86 cachesize 150
1137 Jul 17 21:51:27 box dnsmasq[41230]: DNS service limited to local subnets
1138 Jul 17 21:51:27 box dnsmasq[41230]: compile time options: IPv6 GNU-getopt DBus no-UBus i18n IDN2 DHCP DHCPv6 no-Lua TFTP conntrack ipset auth cryptohash DNSSEC loop-detect inotify dumpfile
1139 Jul 17 21:51:27 box dnsmasq[41230]: reading /etc/resolv.conf
1140 Jul 17 21:51:27 box dnsmasq[41230]: using nameserver 127.0.0.53#53
1141 Jul 17 21:51:27 box dnsmasq[41230]: read /etc/hosts - 5 addresses
1142 Jul 17 21:51:27 box systemd[1]: Started dnsmasq - A lightweight DHCP and caching DNS server.

Start of the network role being run.

1143 Jul 17 21:52:34 box dnsmasq[41230]: reading /etc/resolv.conf
1144 Jul 17 21:52:34 box dnsmasq[41230]: using nameserver 127.0.0.53#53
1145 Jul 17 21:52:34 box dnsmasq[41230]: reading /etc/resolv.conf
1146 Jul 17 21:52:34 box dnsmasq[41230]: using nameserver 127.0.0.53#53
1147 Jul 17 21:52:36 box dnsmasq[41230]: reading /etc/resolv.conf
1148 Jul 17 21:52:36 box dnsmasq[41230]: using nameserver 127.0.0.53#53
1149 Jul 17 21:52:36 box dnsmasq[41230]: reading /etc/resolv.conf
1150 Jul 17 21:52:36 box dnsmasq[41230]: using nameserver 127.0.0.53#53
1151 Jul 17 21:52:36 box dnsmasq[41230]: reading /etc/resolv.conf
1152 Jul 17 21:52:36 box dnsmasq[41230]: using nameserver 127.0.0.53#53
1153 Jul 17 21:52:36 box dnsmasq[41230]: reading /etc/resolv.conf
1154 Jul 17 21:52:36 box dnsmasq[41230]: using nameserver 127.0.0.53#53
1155 Jul 17 21:52:36 box dnsmasq[41230]: reading /etc/resolv.conf
1156 Jul 17 21:52:36 box dnsmasq[41230]: using nameserver 127.0.0.53#53
1157 Jul 17 21:52:36 box dnsmasq[41230]: reading /etc/resolv.conf
1158 Jul 17 21:52:36 box dnsmasq[41230]: using nameserver 127.0.0.53#53
1159 Jul 17 21:52:36 box dnsmasq[41230]: reading /etc/resolv.conf
1160 Jul 17 21:52:36 box dnsmasq[41230]: using nameserver 127.0.0.53#53

Restarting of the network.

1161 Jul 17 21:52:47 box systemd[1]: Stopping dnsmasq - A lightweight DHCP and caching DNS server...
1162 Jul 17 21:52:47 box dnsmasq[41230]: exiting on receipt of SIGTERM
1163 Jul 17 21:52:47 box systemd[1]: dnsmasq.service: Deactivated successfully.
1164 Jul 17 21:52:47 box systemd[1]: Stopped dnsmasq - A lightweight DHCP and caching DNS server.
1165 Jul 17 21:52:47 box systemd[1]: Starting dnsmasq - A lightweight DHCP and caching DNS server...
1166 Jul 17 21:52:47 box dnsmasq[45745]: started, version 2.86 cachesize 150
1167 Jul 17 21:52:47 box dnsmasq[45745]: DNS service limited to local subnets
1168 Jul 17 21:52:47 box dnsmasq[45745]: compile time options: IPv6 GNU-getopt DBus no-UBus i18n IDN2 DHCP DHCPv6 no-Lua TFTP conntrack ipset auth cryptohash DNSSEC loop-detect inotify dumpfile
1169 Jul 17 21:52:47 box dnsmasq[45745]: reading /etc/resolv.conf
1170 Jul 17 21:52:47 box dnsmasq[45745]: using nameserver 127.0.0.53#53
1171 Jul 17 21:52:47 box dnsmasq[45745]: read /etc/hosts - 5 addresses
1172 Jul 17 21:52:47 box systemd[1]: Started dnsmasq - A lightweight DHCP and caching DNS server.

final restart in network restart.yml
Notes on dnsmasq with br0 restarting with networkd-dispatcher

[jvonau]

df trigger

1878 Jul 17 22:07:42 vm18 systemd[1]: proc-sys-fs-binfmt_misc.automount: Got automount request for /proc/sys/fs/binfmt_misc, triggered by 55711 (df)
1879 Jul 17 22:07:42 vm18 systemd[1]: Mounting Arbitrary Executable File Formats File System...
1880 Jul 17 22:07:42 vm18 systemd[1]: Mounted Arbitrary Executable File Formats File System.