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Red Hat Bugzilla – Attachment 695207 Details for
Bug 909430
Filter out inappropriate multicast and subnet broadcast addresses from dynamic DNS update
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output of multicast-broadcast scenarios
attach.txt (text/plain), 4.81 KB, created by
Kaleem
on 2013-02-08 18:13:01 UTC
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Description:
output of multicast-broadcast scenarios
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MIME Type:
Creator:
Kaleem
Created:
2013-02-08 18:13:01 UTC
Size:
4.81 KB
patch
obsolete
>Mulicast address: >================ >On Client: >========== >(1)Assigned a multicast address to interface eth2 > >[root@rhel64client1 ~]# ifconfig eth2 >eth2 Link encap:Ethernet HWaddr 52:54:00:73:69:B8 > inet addr:224.0.0.1 Bcast:224.0.0.255 Mask:255.255.255.0 > inet6 addr: 2620:52:0:41c9:5054:ff:fe73:69b8/64 Scope:Global > inet6 addr: fe80::5054:ff:fe73:69b8/64 Scope:Link > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 > RX packets:4341 errors:0 dropped:0 overruns:0 frame:0 > TX packets:68 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:1000 > RX bytes:249820 (243.9 KiB) TX bytes:4192 (4.0 KiB) > Interrupt:11 Base address:0xe000 > >(2)Configured sssd.conf to pick dynamic dns update from "eth2" interface and dynamic dns update performed. > >[root@rhel64client1 ~]# cat /etc/sssd/sssd.conf|grep ipa_dyn >ipa_dyndns_update = True >ipa_dyndns_iface = eth2 >[root@rhel64client1 ~]# > >[root@rhel64client1 ~]# ssh admin@localhost >admin@localhost's password: >Your password will expire in 87 day(s). >Last login: Wed Feb 6 14:26:46 2013 from localhost >[admin@rhel64client1 ~]$ > >(3) sssd debug shows that only Link local IPv6 address fe80::5054:ff:fe73:69b8 is filtered out and not the multicast address "224.0.0.1". > >(Wed Feb 6 14:59:00 2013) [sssd[be[testrelm.com]]] [delayed_online_authentication_callback] (0x0200): Backend is online, starting delayed online authentication. >(Wed Feb 6 14:59:00 2013) [sssd[be[testrelm.com]]] [ok_for_dns] (0x0200): Link local IPv6 address fe80::5054:ff:fe73:69b8 >(Wed Feb 6 14:59:08 2013) [sssd[be[testrelm.com]]] [resolve_srv_send] (0x0200): The status of SRV lookup is resolved >(Wed Feb 6 14:59:08 2013) [sssd[be[testrelm.com]]] [be_resolve_server_process] (0x0200): Found address for server rhel64master.testrelm.com: [10.65.201.216] TTL 7200 >(Wed Feb 6 14:59:10 2013) [sssd[be[testrelm.com]]] [ipa_hostgroup_info_done] (0x0200): No host groups were dereferenced >(Wed Feb 6 14:59:10 2013) [sssd[be[testrelm.com]]] [hbac_get_category] (0x0200): Category is set to 'all'. >(Wed Feb 6 14:59:10 2013) [sssd[be[testrelm.com]]] [hbac_get_category] (0x0200): Category is set to 'all'. > >On Server: >========== >(1)A record of client has been updated with multicast address. > >[root@rhel64master ~]# ipa dnsrecord-show testrelm.com rhel64client1 > Record name: rhel64client1 > A record: 224.0.0.1 > AAAA record: 2620:52:0:41c9:5054:ff:fe73:69b8 > SSHFP record: 1 1 57EA2E45D2179CA8CB657F87D193779CD748443E, 2 1 E63F99C498C201838B383EFD423D7A38B3370F04 >[root@rhel64master ~]# > > >Broadcast address: >================ >On Client: >========== >(1)Assigned a Broadcast address to interface eth2 > >[root@rhel64client1 ~]# ifconfig eth2 >eth2 Link encap:Ethernet HWaddr 52:54:00:73:69:B8 > inet addr:10.65.201.255 Bcast:10.65.201.255 Mask:255.255.255.255 > inet6 addr: 2620:52:0:41c9:5054:ff:fe73:69b8/64 Scope:Global > inet6 addr: fe80::5054:ff:fe73:69b8/64 Scope:Link > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 > RX packets:5464 errors:0 dropped:0 overruns:0 frame:0 > TX packets:81 errors:0 dropped:0 overruns:0 carrier:0 > collisions:0 txqueuelen:1000 > RX bytes:313119 (305.7 KiB) TX bytes:5014 (4.8 KiB) > Interrupt:11 Base address:0xe000 > >[root@rhel64client1 ~]# > >(2)Configured sssd.conf to pick dynamic dns update from "eth2" interface and did dynamic dns update. > >[root@rhel64client1 ~]# cat /etc/sssd/sssd.conf|grep ipa_dyn >ipa_dyndns_update = True >ipa_dyndns_iface = eth2 >[root@rhel64client1 ~]# > >[root@rhel64client1 ~]# ssh admin@localhost >admin@localhost's password: >Your password will expire in 87 day(s). >Last login: Wed Feb 6 14:26:46 2013 from localhost >[admin@rhel64client1 ~]$ > >(3) sssd debug shows that only Link local IPv6 address fe80::5054:ff:fe73:69b8 is filtered out and not the Broadcast address "10.65.201.255". > > TTL 7200 >(Wed Feb 6 15:09:58 2013) [sssd[be[testrelm.com]]] [delayed_online_authentication_callback] (0x0200): Backend is online, starting delayed online authentication. >(Wed Feb 6 15:09:58 2013) [sssd[be[testrelm.com]]] [ok_for_dns] (0x0200): Link local IPv6 address fe80::5054:ff:fe73:69b8 >(Wed Feb 6 15:09:58 2013) [sssd[be[testrelm.com]]] [create_nsupdate_message] (0x0200): Creating update message for realm [TESTRELM.COM] and zone [testrelm.com]. >(Wed Feb 6 15:10:21 2013) [sssd[be[testrelm.com]]] [resolve_srv_send] (0x0200): The status of SRV lookup is resolved > >On Server: >========== >(1)A record of client has been updated with Broadcast address. > >[root@rhel64master ~]# ipa dnsrecord-show testrelm.com rhel64client1 > Record name: rhel64client1 > A record: 10.65.201.255 > AAAA record: 2620:52:0:41c9:5054:ff:fe73:69b8 > SSHFP record: 1 1 57EA2E45D2179CA8CB657F87D193779CD748443E, 2 1 E63F99C498C201838B383EFD423D7A38B3370F04 >[root@rhel64master ~]# > > >
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bug 909430
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