rich1.0phorkiehttps://p.cweiske.de/ipv6 slaac problemsChristian Weiske86400900900<!-- embedding all files of https://p.cweiske.de/671 -->
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<div class="code"><pre class="txt">search terms:
- slaac debugging linux
- slaac "prefix not used" no ip address
- slaac prefix "no ipv6 address"
- "Stateful other conf"
net.ipv6.conf.eth2.accept_ra = 1
net.ipv6.conf.eth2.accept_ra_defrtr = 0
net.ipv6.conf.eth2.accept_ra_pinfo = 0
net.ipv6.conf.eth2.accept_ra_rt_info_max_plen = 0
https://askubuntu.com/questions/652766/ipv6-slaac-icmpv6-router-advertisments-are-ignored-by-wlan1-interface
ndisc6 gathers a few diagnostic tools for IPv6 networks including:
- ndisc6, which performs ICMPv6 Neighbor Discovery in userland,
- rdisc6, which performs ICMPv6 Router Discovery in userland,
- rltraceroute6, a UDP/ICMP IPv6 implementation of traceroute,
- tcptraceroute6, a TCP/IPv6-based traceroute implementation,
- tcpspray6, a TCP/IP Discard/Echo bandwidth meter,
- addrinfo, easy script interface for hostname and address resolution,
- dnssort, DNS sorting script.
root@gpc-rom:~# LC_ALL=C rdisc6 eth2
Soliciting ff02::2 (ff02::2) on eth2...
Hop limit : 64 ( 0x40)
Stateful address conf. : No
Stateful other conf. : Yes
Mobile home agent : No
Router preference : medium
Neighbor discovery proxy : No
Router lifetime : 1800 (0x00000708) seconds
Reachable time : unspecified (0x00000000)
Retransmit time : unspecified (0x00000000)
Prefix : 2a02:238:f065::/48
On-link : Yes
Autonomous address conf.: Yes
Valid time : 86400 (0x00015180) seconds
Pref. time : 14400 (0x00003840) seconds
Recursive DNS server : 2a02:238:f065::1
DNS server lifetime : 600 (0x00000258) seconds
DNS search list : mogic.company
DNS search list lifetime: 600 (0x00000258) seconds
MTU : 1500 bytes (valid)
Source link-layer address: 52:B8:45:B5:6B:33
from fe80::50b8:45ff:feb5:6b33
cweiske@gpc-rom:~$ nmcli device show eth2
root@gpc-rom:~# nmcli monitor
root@gpc-rom:~# nmcli general logging level DEBUG domains ALL
$ jourctrl
NetworkManager[1297]: <debug> platform-linux: sysctl: setting '/proc/sys/net/ipv6/conf/eth2/accept_ra' to '1' (current value is '0')
NetworkManager[1297]: <debug> platform-linux: sysctl: setting '/proc/sys/net/ipv6/conf/eth2/accept_ra_defrtr' to '0' (current value is identical)
NetworkManager[1297]: <debug> platform-linux: sysctl: setting '/proc/sys/net/ipv6/conf/eth2/accept_ra_pinfo' to '0' (current value is identical)
NetworkManager[1297]: <debug> platform-linux: sysctl: setting '/proc/sys/net/ipv6/conf/eth2/accept_ra_rtr_pref' to '0' (current value is identical)
NetworkManager[1297]: <debug> ndisc[0x559bf34acd40,"eth2"]: router solicitation sent
NetworkManager[1297]: <debug> ndisc[0x559bf34acd40,"eth2"]: scheduling router solicitation retry in 4 seconds.
NetworkManager[1297]: <debug> ndisc-lndp[0x559bf34acd40,"eth2"]: processing libndp events
NetworkManager[1297]: <debug> ndisc-lndp[0x559bf34acd40,"eth2"]: received router advertisement at 6554
NetworkManager[1297]: <debug> ndisc[0x559bf34acd40,"eth2"]: scheduling next now/lifetime check: 1800 seconds
NetworkManager[1297]: <debug> ndisc[0x559bf34acd40,"eth2"]: neighbor discovery configuration changed [dGRSD]:
NetworkManager[1297]: <debug> ndisc[0x559bf34acd40,"eth2"]: dhcp-level otherconf
NetworkManager[1297]: <debug> ndisc[0x559bf34acd40,"eth2"]: gateway fe80::50b8:45ff:feb5:6b33 pref medium exp 1799,9981
NetworkManager[1297]: <debug> ndisc[0x559bf34acd40,"eth2"]: route 2a02:238:f065::/48 via :: pref medium exp 86399,9981
NetworkManager[1297]: <debug> ndisc[0x559bf34acd40,"eth2"]: dns_server 2a02:238:f065::1 exp 7199,9981
NetworkManager[1297]: <debug> ndisc[0x559bf34acd40,"eth2"]: dns_domain mogic.company exp 7199,9981
RFC 4861
M 1-bit "Managed address configuration" flag. When
set, it indicates that addresses are available via
Dynamic Host Configuration Protocol [DHCPv6].
If the M flag is set, the O flag is redundant and
can be ignored because DHCPv6 will return all
available configuration information.
O 1-bit "Other configuration" flag. When set, it
indicates that other configuration information is
available via DHCPv6. Examples of such information
are DNS-related information or information on other
servers within the network.
Note: If neither M nor O flags are set, this indicates that no
information is available via DHCPv6.
64 bit präfix war das problem
48 war vorher, mit 64 gehts
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