{"type":"rich","version":"1.0","provider_name":"phorkie","provider_url":"https:\/\/p.cweiske.de\/","title":"ipv6 slaac problems","author_name":"Christian Weiske","cache_age":86400,"width":900,"height":900,"html":"\n\n
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search terms:\r\n- slaac debugging linux\r\n- slaac "prefix not used" no ip address\r\n- slaac prefix "no ipv6 address"\r\n\r\n- "Stateful other conf"\r\n\r\n\r\nnet.ipv6.conf.eth2.accept_ra = 1\r\nnet.ipv6.conf.eth2.accept_ra_defrtr = 0\r\nnet.ipv6.conf.eth2.accept_ra_pinfo = 0\r\nnet.ipv6.conf.eth2.accept_ra_rt_info_max_plen = 0\r\n\r\nhttps:\/\/askubuntu.com\/questions\/652766\/ipv6-slaac-icmpv6-router-advertisments-are-ignored-by-wlan1-interface\r\n\r\n\r\n ndisc6 gathers a few diagnostic tools for IPv6 networks including:\r\n  - ndisc6, which performs ICMPv6 Neighbor Discovery in userland,\r\n  - rdisc6, which performs ICMPv6 Router Discovery in userland,\r\n  - rltraceroute6, a UDP\/ICMP IPv6 implementation of traceroute,\r\n  - tcptraceroute6, a TCP\/IPv6-based traceroute implementation,\r\n  - tcpspray6, a TCP\/IP Discard\/Echo bandwidth meter,\r\n  - addrinfo, easy script interface for hostname and address resolution,\r\n  - dnssort, DNS sorting script.\r\n\r\n\r\n\r\nroot@gpc-rom:~# LC_ALL=C rdisc6 eth2\r\nSoliciting ff02::2 (ff02::2) on eth2...\r\n\r\nHop limit                 :           64 (      0x40)\r\nStateful address conf.    :           No\r\nStateful other conf.      :          Yes\r\nMobile home agent         :           No\r\nRouter preference         :       medium\r\nNeighbor discovery proxy  :           No\r\nRouter lifetime           :         1800 (0x00000708) seconds\r\nReachable time            :  unspecified (0x00000000)\r\nRetransmit time           :  unspecified (0x00000000)\r\n Prefix                   : 2a02:238:f065::\/48\r\n  On-link                 :          Yes\r\n  Autonomous address conf.:          Yes\r\n  Valid time              :        86400 (0x00015180) seconds\r\n  Pref. time              :        14400 (0x00003840) seconds\r\n Recursive DNS server     : 2a02:238:f065::1\r\n  DNS server lifetime     :          600 (0x00000258) seconds\r\n DNS search list          : mogic.company \r\n  DNS search list lifetime:          600 (0x00000258) seconds\r\n MTU                      :         1500 bytes (valid)\r\n Source link-layer address: 52:B8:45:B5:6B:33\r\n from fe80::50b8:45ff:feb5:6b33\r\n\r\n\r\ncweiske@gpc-rom:~$ nmcli device show eth2\r\n\r\nroot@gpc-rom:~# nmcli monitor\r\nroot@gpc-rom:~# nmcli general logging level DEBUG domains ALL\r\n\r\n$ jourctrl\r\n\r\n\r\nNetworkManager[1297]: <debug> platform-linux: sysctl: setting '\/proc\/sys\/net\/ipv6\/conf\/eth2\/accept_ra' to '1' (current value is '0')\r\nNetworkManager[1297]: <debug> platform-linux: sysctl: setting '\/proc\/sys\/net\/ipv6\/conf\/eth2\/accept_ra_defrtr' to '0' (current value is identical)\r\nNetworkManager[1297]: <debug> platform-linux: sysctl: setting '\/proc\/sys\/net\/ipv6\/conf\/eth2\/accept_ra_pinfo' to '0' (current value is identical)\r\nNetworkManager[1297]: <debug> platform-linux: sysctl: setting '\/proc\/sys\/net\/ipv6\/conf\/eth2\/accept_ra_rtr_pref' to '0' (current value is identical)\r\n\r\n\r\nNetworkManager[1297]: <debug> ndisc[0x559bf34acd40,"eth2"]: router solicitation sent\r\nNetworkManager[1297]: <debug> ndisc[0x559bf34acd40,"eth2"]: scheduling router solicitation retry in 4 seconds.\r\nNetworkManager[1297]: <debug> ndisc-lndp[0x559bf34acd40,"eth2"]: processing libndp events\r\nNetworkManager[1297]: <debug> ndisc-lndp[0x559bf34acd40,"eth2"]: received router advertisement at 6554\r\nNetworkManager[1297]: <debug> ndisc[0x559bf34acd40,"eth2"]: scheduling next now\/lifetime check: 1800 seconds\r\nNetworkManager[1297]: <debug> ndisc[0x559bf34acd40,"eth2"]: neighbor discovery configuration changed [dGRSD]:\r\nNetworkManager[1297]: <debug> ndisc[0x559bf34acd40,"eth2"]:   dhcp-level otherconf\r\nNetworkManager[1297]: <debug> ndisc[0x559bf34acd40,"eth2"]:   gateway fe80::50b8:45ff:feb5:6b33 pref medium exp 1799,9981\r\nNetworkManager[1297]: <debug> ndisc[0x559bf34acd40,"eth2"]:   route 2a02:238:f065::\/48 via :: pref medium exp 86399,9981\r\nNetworkManager[1297]: <debug> ndisc[0x559bf34acd40,"eth2"]:   dns_server 2a02:238:f065::1 exp 7199,9981\r\nNetworkManager[1297]: <debug> ndisc[0x559bf34acd40,"eth2"]:   dns_domain mogic.company exp 7199,9981\r\n\r\n\r\n\r\nRFC 4861\r\n\r\n      M              1-bit "Managed address configuration" flag.  When\r\n                     set, it indicates that addresses are available via\r\n                     Dynamic Host Configuration Protocol [DHCPv6].\r\n\r\n                     If the M flag is set, the O flag is redundant and\r\n                     can be ignored because DHCPv6 will return all\r\n                     available configuration information.\r\n\r\n      O              1-bit "Other configuration" flag.  When set, it\r\n                     indicates that other configuration information is\r\n                     available via DHCPv6.  Examples of such information\r\n                     are DNS-related information or information on other\r\n                     servers within the network.\r\n\r\n        Note: If neither M nor O flags are set, this indicates that no\r\n        information is available via DHCPv6.\r\n\r\n\r\n64 bit pr\u00e4fix war das problem\r\n48 war vorher, mit 64 gehts\r\n<\/pre><\/div>\n\n <\/div>\n 
\n  view raw source<\/a>\n  info.txt<\/a>\n <\/div>\n<\/div>\n<\/div>\n"}