[Dnsmasq-discuss] static lease issues?

Kevin Darbyshire-Bryant kevin at darbyshire-bryant.me.uk
Mon Nov 5 03:30:12 GMT 2018


Hi Simon, Hi List,

I’m hearing rumblings from the openwrt community that something isn’t right with static leases.   The behaviour manifests itself as the statically assigned host being unable to renew its lease.  e.g.

-this is okay
Nov  4 15:29:29 192.168.0.254 dnsmasq-dhcp[2378]: 424644159 available DHCP range: 192.168.0.100 -- 192.168.0.199
Nov  4 15:29:29 192.168.0.254 dnsmasq-dhcp[2378]: 424644159 client provides name: sylvester
Nov  4 15:29:29 192.168.0.254 dnsmasq-dhcp[2378]: 424644159 DHCPDISCOVER(eth0.54) 00:11:22:33:44:55
Nov  4 15:29:29 192.168.0.254 dnsmasq-dhcp[2378]: 424644159 tags: lan, known, eth0.54
Nov  4 15:29:29 192.168.0.254 dnsmasq-dhcp[2378]: 424644159 DHCPOFFER(eth0.54) 192.168.0.12 00:11:22:33:44:55
-but later

Nov  4 15:52:32 192.168.0.254 dnsmasq-dhcp[2378]: 53015875 available DHCP range: 192.168.0.100 -- 192.168.0.199
Nov  4 15:52:32 192.168.0.254 dnsmasq-dhcp[2378]: 53015875 client provides name: sylvester
Nov  4 15:52:32 192.168.0.254 dnsmasq-dhcp[2378]: 53015875 DHCPREQUEST(eth0.54) 192.168.0.12 00:11:22:33:44:55
Nov  4 15:52:32 192.168.0.254 dnsmasq-dhcp[2378]: 53015875 DHCPNAK(eth0.54) 192.168.0.12 00:11:22:33:44:55 address not available
Nov  4 15:52:32 192.168.0.254 dnsmasq-dhcp[2378]: 53015875 broadcast response
Nov  4 15:52:32 192.168.0.254 dnsmasq-dhcp[2378]: 53015875 sent size:  1 option: 53 message-type  6
Nov  4 15:52:32 192.168.0.254 dnsmasq-dhcp[2378]: 53015875 sent size:  4 option: 54 server-identifier  192.168.0.254
Nov  4 15:52:32 192.168.0.254 dnsmasq-dhcp[2378]: 53015875 sent size: 21 option: 56 message  61:64:64:72:65:73:73:20:6e:6f:74:20:61:76...
Nov  4 15:52:32 192.168.0.254 dnsmasq-dhcp[2378]: 1321333264 available DHCP range: 192.168.0.100 -- 192.168.0.199
Nov  4 15:52:32 192.168.0.254 dnsmasq-dhcp[2378]: 1321333264 client provides name: sylvester
Nov  4 15:52:36 192.168.0.254 dnsmasq-dhcp[2378]: 1321333264 DHCPDISCOVER(eth0.54) 00:11:22:33:44:55
Nov  4 15:52:36 192.168.0.254 dnsmasq-dhcp[2378]: 1321333264 tags: lan, known-othernet, eth0.54
Nov  4 15:52:36 192.168.0.254 dnsmasq-dhcp[2378]: 1321333264 DHCPOFFER(eth0.54) 192.168.0.190 00:11:22:33:44:55

I have yet to see this behaviour personally, so I’m putting this out there as a) anyone else b) any ideas on debugging?


Cheers,

Kevin D-B

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