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--- basic-ipv6 [2023/01/26 08:45] – m_ars
+++ basic-ipv6 [2023/01/26 09:04] – IPv6: add docu for - Do not allow PD/Address release m_ars
@@ Line 24: / Line 24: @@
 Europe's biggest telecommunications company supports a dual-stack setup (IPv4 & IPv6). By default, German Telekom provides a prefix length of 56 for regular consumers. A prefix length of 64 (the default configuration for FreshTomato) will also work, but eliminates the possibility of assigning different IPv6 address ranges for bridge 1 (br1) to 3 (br3).
+{{:ft_basic_ipv6_dhcpv6_01.png}}
 **Extended options are available for IPv6 DHCPv6 PD - if bridges 1 (br1) to 3 (br3) exist AND if the prefix length is smaller than 64 (for example 60 or 56)**
+{{:ft_basic_ipv6_dhcpv6_02.png}}
 ==== Static IPv6 ====
@@ Line 77: / Line 81: @@
 This function should be enabled for ISPs that require only a Prefix Delegation (usually PPPoE-authenticated xDSL or fiber connections).
+===== Do not allow PD/Address release =====
+Prevent DHCP6 client to send a release message to the ISP on exit. With this option set, the client is more likely to receive the same allocation with subsequent requests.
+Support for this option is available starting with release 2022.4
 ===== Add default route ::/0 =====

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