serverseitig:
$ dmesg | grep -i ipv6
[ 0.524878] Segment Routing with IPv6
[ 48.297669] IPv6: ADDRCONF(NETDEV_CHANGE): eno1: link becomes ready
$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether f0:1f:af:33:52:03 brd ff:ff:ff:ff:ff:ff
inet 192.168.144.101/24 brd 192.168.144.255 scope global dynamic noprefixroute eno1
valid_lft 62392sec preferred_lft 62392sec
inet6 2003:de:ff32:5900:61ed:e054:dfcc:c0ca/64 scope global temporary dynamic
valid_lft 6720sec preferred_lft 1320sec
inet6 2003:de:ff32:5900:9664:fd01:181e:4744/64 scope global dynamic mngtmpaddr noprefixroute
valid_lft 6720sec preferred_lft 1320sec
inet6 fe80::38e4:156e:5049:74a3/64 scope link noprefixroute
valid_lft forever preferred_lft forever
$ modinfo ipv6
name: ipv6
filename: (builtin)
alias: net-pf-10
license: GPL
description: IPv6 protocol stack for Linux
author: Cast of dozens
parm: disable:Disable IPv6 module such that it is non-functional (int)
parm: disable_ipv6:Disable IPv6 on all interfaces (int)
parm: autoconf:Enable IPv6 address autoconfiguration on all interfaces (int)
$ lsmod | grep -i ipv6
## keine ausgabe
clientseitig:
$ dmesg | grep -i ipv6
[ 0.084199] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-5.4.0-58-generic root=UUID=296eab93-8ab5-486e-87a2-7b03350b1e92 ro ipv6.disable=1 ipv6.disable=1 splash vt.handoff=1
[ 2.076335] IPv6: Loaded, but administratively disabled, reboot required to enable
$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
2: enp2s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether 00:12:3f:df:c0:95 brd ff:ff:ff:ff:ff:ff
inet 192.168.144.103/24 brd 192.168.144.255 scope global dynamic noprefixroute enp2s0
valid_lft 50850sec preferred_lft 50850sec
$ modinfo ipv6
modinfo: ERROR: Module ipv6 not found.
$ lsmod | grep -i ipv6
## keine Ausgabe
Der Konflikt ist erkennbar.