Unterschiede

Hier werden die Unterschiede zwischen zwei Versionen angezeigt.

--- ipv6 [2024-02-16 01:21:03] – [IPv6 abschalten] manfred
+++ ipv6 [2025-07-05 02:31:29] (aktuell) – [in Linux IPv6 abschalten] david
@@ Zeile 1: / Zeile 1: @@
 ====== IPv6 ======
-RFC4291: [[https://youtu.be/z2NDIHsxP1Q|Ipv6 Adresse einfach erklärt, ipv6 Subnetting und ip Prefix]]
+  * RFC4291: [[https://youtu.be/z2NDIHsxP1Q|Ipv6 Adresse einfach erklärt, ipv6 Subnetting und ip Prefix]]
+===== Neighbor Discovery (NDP) =====
+  * ipv6 multicast ping an alle hosts: ''%%ping6 ff02::1%eth0%%''
+  * ipv6 multicast ping an alle router: ''%%ping6 ff02::2%eth0%%''
+  * ndp cache (ipv6) bzw. arp tabelle (ipv4) auslesen:
+    * ''%%ip neigh%%''
+    * ''%%ip -6 neigh%%''
+    * ''%%ip -4 neigh%%''
+===== IP Adressen reserviert für Dokumentation =====
+  * [[https://en.wikipedia.org/wiki/Reserved_IP_addresses]]
+  * IPv4:
+    * ''192.0.2.0/24'' (256)
+    * ''198.51.100.0/24'' (256)
+    * ''203.0.113.0/24'' (256)
+  * IPv6:
+    * ''2001:db8::/32'' (2^96)
+    * ''3fff::/20'' (2^108)
+===== IPv6 ULA gegenüber IPv4 bevorzugen =====
+==== Windows ====
+<code powershell>
+# prefix präferenz anzeigen
+netsh interface ipv6 show prefixpolicies
+# 6to4, prio: 30 -> 20
+netsh interface ipv6 set prefixpolicy prefix=2002::/16 precedence=20 label=2 store=persistent
+# ipv4, prio: 35 -> 30
+netsh interface ipv6 set prefixpolicy prefix=::ffff:0:0/96 precedence=30 label=4 store=persistent
+# ula, prio: 3 -> 35
+netsh interface ipv6 set prefixpolicy prefix=fc00::/7 precedence=35 label=13 store=persistent
+# prefix präferenz anzeigen
+netsh interface ipv6 show prefixpolicies
+</code>
@@ Zeile 51: / Zeile 96: @@
   ipconfig -all
-===== IPv6 =====
+===== IPv6 SLAAC auf FreeBSD =====
-==== FreeBSD ====
+  * ''man rc.conf''
+  * ''man ifconfig''
+  * ''man rtsold''
+  * ''man inet6''
-<code>
+<code bash /etc/rc.conf>
-> nslookup fritz.box 192.168.0.254
+# IPv6 aktivieren
-Server:		192.168.0.254
+ipv6_activate_all_interfaces="YES"
-Address:	192.168.0.254#53
-Name:	fritz.box
+# privacy extensions (temporary addresses)
-Address: 192.168.0.254
+ipv6_privacy="NO"
-Name:	fritz.box
-Address: fd00::de15:c8ff:5678:1234
-Name:	fritz.box
-Address: 2a00:6020:b3ad:cc00:de15:c8ff:5678:1234
-</code>
-<code>
+# ICMPv6 RA (router advertisment)
-> nslookup fritz.box 192.168.0.254
+#ifconfig_em0_ipv6="inet6 accept_rtadv"
-Server:		192.168.0.254
-Address:	192.168.0.254#53
-Name:	fritz.box
+# ICMPv6 RA (router advertisment) & default route
-Address: 192.168.0.254
+ifconfig_em0_ipv6="inet6 accept_rtadv -no_radr"
-Name:	fritz.box
-Address: fd00::de15:c8ff:5678:1234
-Name:	fritz.box
-Address: 2a00:6020:b3ad:cc00:de15:c8ff:5678:1234
-</code>
-<code>
+# ICMPv6 RS (router solicitation)
-> dig +short fritz.box
+rtsold_enable="YES"
-.168.0.254
+rtsold_flags="-aF"
 </code>
-<code>
+<code bash /etc/sysctl.conf>
-> dig +short fritz.box aaaa
+# IPv6 Sockets sind von IPv6 & IPv4 ansprechbar
-a00:6020:b3ad:cc00:de15:c8ff:5678:1234
+net.inet6.ip6.v6only=0
-fd00::de15:c8ff:5678:1234
-</code>
-<code>
-> dig +short @192.168.0.254 fritz.box aaaa
-fd00::de15:c8ff:5678:1234
-a00:6020:b3ad:cc00:de15:c8ff:5678:1234
 </code>
@@ Zeile 103: / Zeile 131: @@
-==== in FreeBSD IPv6 abschalten ====
+==== FreeBSD ====
   * [[https://www.freebsd.org/doc/de/books/developers-handbook/ipv6.html]]
@@ Zeile 137: / Zeile 165: @@
-==== in Linux IPv6 abschalten ====
+==== Linux ====
   * [[http://www.pro-linux.de/artikel/2/1557/ipv6-basiertes-heim-netzwerk.html|IPv6]]