/etc/dhcp/dhcpd6.conf is in isc-dhcp-server 4.3.5-3ubuntu7.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 | # Server configuration file example for DHCPv6
# From the file used for TAHI tests - addresses chosen
# to match TAHI rather than example block.
# IPv6 address valid lifetime
# (at the end the address is no longer usable by the client)
# (set to 30 days, the usual IPv6 default)
default-lease-time 2592000;
# IPv6 address preferred lifetime
# (at the end the address is deprecated, i.e., the client should use
# other addresses for new connections)
# (set to 7 days, the usual IPv6 default)
preferred-lifetime 604800;
# T1, the delay before Renew
# (default is 1/2 preferred lifetime)
# (set to 1 hour)
option dhcp-renewal-time 3600;
# T2, the delay before Rebind (if Renews failed)
# (default is 3/4 preferred lifetime)
# (set to 2 hours)
option dhcp-rebinding-time 7200;
# Enable RFC 5007 support (same than for DHCPv4)
allow leasequery;
# Global definitions for name server address(es) and domain search list
option dhcp6.name-servers 3ffe:501:ffff:100:200:ff:fe00:3f3e;
option dhcp6.domain-search "test.example.com","example.com";
# Set preference to 255 (maximum) in order to avoid waiting for
# additional servers when there is only one
##option dhcp6.preference 255;
# Server side command to enable rapid-commit (2 packet exchange)
##option dhcp6.rapid-commit;
# The delay before information-request refresh
# (minimum is 10 minutes, maximum one day, default is to not refresh)
# (set to 6 hours)
option dhcp6.info-refresh-time 21600;
# Static definition (must be global)
#host myclient {
# # The entry is looked up by this
# host-identifier option
# dhcp6.client-id 00:01:00:01:00:04:93:e0:00:00:00:00:a2:a2;
#
# # A fixed address
# fixed-address6 3ffe:501:ffff:100::1234;
#
# # A fixed prefix
# fixed-prefix6 3ffe:501:ffff:101::/64;
#
# # Override of the global definitions,
# # works only when a resource (address or prefix) is assigned
# option dhcp6.name-servers 3ffe:501:ffff:100:200:ff:fe00:4f4e;
#
# # For debug (to see when the entry statements are executed)
# # (log "sol" when a matching Solicitation is received)
# ##if packet(0,1) = 1 { log(debug,"sol"); }
#}
#
#host otherclient {
# # This host entry is hopefully matched if the client supplies a DUID-LL
# # or DUID-LLT containing this MAC address.
# hardware ethernet 01:00:80:a2:55:67;
#
# fixed-address6 3ffe:501:ffff:100::4321;
#}
# The subnet where the server is attached
# (i.e., the server has an address in this subnet)
#subnet6 3ffe:501:ffff:100::/64 {
# # Two addresses available to clients
# # (the third client should get NoAddrsAvail)
# range6 3ffe:501:ffff:100::10 3ffe:501:ffff:100::11;
#
# # Use the whole /64 prefix for temporary addresses
# # (i.e., direct application of RFC 4941)
# range6 3ffe:501:ffff:100:: temporary;
#
# # Some /64 prefixes available for Prefix Delegation (RFC 3633)
# prefix6 3ffe:501:ffff:100:: 3ffe:501:ffff:111:: /64;
#}
# A second subnet behind a relay agent
#subnet6 3ffe:501:ffff:101::/64 {
# range6 3ffe:501:ffff:101::10 3ffe:501:ffff:101::11;
#
# # Override of the global definitions,
# # works only when a resource (address or prefix) is assigned
# option dhcp6.name-servers 3ffe:501:ffff:101:200:ff:fe00:3f3e;
#
#}
# A third subnet behind a relay agent chain
#subnet6 3ffe:501:ffff:102::/64 {
# range6 3ffe:501:ffff:102::10 3ffe:501:ffff:102::11;
#}
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