[GitHub] [cloudstack] ustcweizhou opened a new pull request #3205: server: update dhcp configurations in vrs while update default nic of running vms

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ustcweizhou opened a new pull request #3205: server: update dhcp configurations in vrs while update default nic of running vms
URL: https://github.com/apache/cloudstack/pull/3205
 
 
   In virtual routers, there are different dnsmasq settings for default nic and non-default nic on vm.
   We need to update dhcp informations on network vrs when default nic is changed.
   
   For example, if 172.16.1.135 is non-default nic of vm VPC1-001-001, then
   
   root@r-22-VM:~# cat /etc/dhcphosts.txt
   02:00:1d:15:00:05,set:172_16_1_135,172.16.1.135,VPC1-001-001,710h
   root@r-22-VM:~# cat /etc/dhcpopts.txt
   172_16_1_135,3
   172_16_1_135,6
   172_16_1_135,15
   
   If it is default nic,then
   
   root@r-22-VM:~# cat /etc/dhcpopts.txt
   root@r-22-VM:~# cat /etc/dhcphosts.txt
   02:00:1d:15:00:05,172.16.1.135,VPC1-001-001,757h
   
   Fixes: #3201 
   
   ## Description
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   ## Types of changes
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