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Extend 79aba0f10a for multiple IPv6 addresses.

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This commit is contained in:
Simon Kelley
2020-02-06 22:09:30 +00:00
parent 79aba0f10a
commit 137286e9ba
6 changed files with 328 additions and 280 deletions
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7
man/dnsmasq.8
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@@ -1008,14 +1008,15 @@ allowed to specify the client ID as text, like this:
A single
.B --dhcp-host
may contain an IPv4 address or an IPv6 address, or both. IPv6 addresses must be bracketed by square brackets thus:
may contain an IPv4 address or one or more IPv6 addresses, or both. IPv6 addresses must be bracketed by square brackets thus:
.B --dhcp-host=laptop,[1234::56]
IPv6 addresses may contain only the host-identifier part:
.B --dhcp-host=laptop,[::56]
in which case they act as wildcards in constructed dhcp ranges, with
the appropriate network part inserted. For IPv6, the address may include a prefix length:
the appropriate network part inserted. For IPv6, an address may include a prefix length:
.B --dhcp-host=laptop,[1234:50/126]
which (in this case) specifies four addresses, 1234::50 to 1234::53. This is useful
which (in this case) specifies four addresses, 1234::50 to 1234::53. This (an the ability
to specify multiple addresses) is useful
when a host presents either a consistent name or hardware-ID, but varying DUIDs, since it allows
dnsmasq to honour the static address allocation but assign a different adddress for each DUID. This
typically occurs when chain netbooting, as each stage of the chain gets in turn allocates an address.