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Allow --dhcp-authoritative to control recreation of missing leases in DHCPv6.

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Change the behaviour of the DHVPv6 server when a REBIND message
is received but no lease exists. Under these circumstances a new
lease is created _only_ when the --dhcp-authoritative option is
set. This matches the behavior of the DHCPv4 server.
This commit is contained in:
Simon Kelley
2025-07-22 21:51:47 +01:00
parent 3ceea9e755
commit 3034746748
3 changed files with 12 additions and 3 deletions
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man/dnsmasq.8
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@@ -1739,7 +1739,9 @@ For DHCPv4, it changes the behaviour from strict RFC compliance so that DHCP req
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
reacquire a lease, if the database is lost. For DHCPv6 it controls the same
behaviour as DHCPv4 with missing leases (except for the RFC uncompliance - the
DHCPv6 RFCs allow this behaviour if configured). It also sets the
priority in replies to 255 (the maximum) instead of 0 (the minimum).
.TP
.B --dhcp-rapid-commit