Hi Bob Am 26.01.2017 um 16:09 schrieb Bob von Knobloch:
On 26/01/17 14:48, Erich Titl wrote:Hi
...
cheers ErichLook at the dnsmasq option (from the manpage): -K, --dhcp-authoritative Should be set when dnsmasq is definitely the only DHCP server on a network. For DHCPv4, it changes the behaviour from strict RFC compliance so that DHCP requests on unknown leases from unknown hosts are not ignored. This allows new hosts to get a lease without a tedious timeout under all circumstances. It also allows dnsmasq to rebuild its lease database without each client needing to reacquire a lease, if the database is lost. For DHCPv6 it sets the priority in replies to 255 (the maximum) instead of 0 (the minimum). Maybe this could help?
It could, still it appears that leases should not be shorter than one hour and if the leases file gets lost during a reboot then the DNS resolution for the the host might not work automatically although the system may still be reachable.
So the important point seems to be to preserve the DNS resolution for such a system and give dnsmasq a way to use it.
For such an environment I would use (semi-)static addresses and put the names to /etc/hosts.
cheers Erich
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