For a long time I’ve been annoyed that VirtualBox issues a different DHCP lease to a virtual machine guest after a while, and there doesn’t seem to be any way to change that within VirtualBox itself. I asked on Twitter, and got a response which trigerred an aha!

virtualbox dhcp disable

I disabled VirtualBox’ DHCP for the interface I’m interested in, and configured a dnsmasq on my notebook.


Minutes later I saw this on the console upon launching dnsmasq and then a VirtualBox guest I already had:

dnsmasq: started, version 2.78 cachesize 150
dnsmasq: compile time options: IPv6 GNU-getopt no-DBus no-i18n no-IDN DHCP DHCPv6 no-Lua TFTP no-conntrack no-ipset auth no-DNSSEC loop-detect no-inotify
dnsmasq: setting --bind-interfaces option because of OS limitations
dnsmasq-dhcp: DHCP, IP range --, lease time 12h
dnsmasq: reading /etc/resolv.conf
dnsmasq: using nameserver
dnsmasq: using nameserver
dnsmasq: read /etc/hosts - 3 addresses

dnsmasq-dhcp: DHCPDISCOVER(vboxnet0) 08:00:27:7d:aa:db
dnsmasq-dhcp: DHCPOFFER(vboxnet0) 08:00:27:7d:aa:db
dnsmasq-dhcp: DHCPREQUEST(vboxnet0) 08:00:27:7d:aa:db
dnsmasq-dhcp: DHCPACK(vboxnet0) 08:00:27:7d:aa:db cen7pdns

Lovely. It works.

VirtualBox and DHCP :: 07 Mar 2018 :: e-mail


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