Airport keeps on Reconnecting & Disconnecting PPPoE

Hello All,
Ive been experiencing this reconnecting & disconnecting with my ISP for about a month now. Does any one know whats wrong with my connection?
Here's the Log from my AEBS
Feb 28 19:31:12 Severity:5 Disconnected.
Feb 28 19:31:13 Severity:5 Associated with station 00:18:f8:34:f7:f9
Feb 28 19:31:16 Severity:5 Deauthenticating with station 00:18:f8:34:f7:f9 (reserved 2).
Feb 28 19:31:16 Severity:5 Disassociated with station 00:18:f8:34:f7:f9
Feb 28 19:31:23 Severity:5 Associated with station 00:18:f8:34:f7:f9
Feb 28 19:31:23 Severity:5 Installed unicast TKIP key for supplicant 00:18:f8:34:f7:f9
Feb 28 19:31:23 Severity:5 Connection established 117.102.110.248 -> 117.102.108.1.
Feb 28 19:33:19 Severity:5 Disconnected.
Feb 28 19:33:24 Severity:5 Connection established 117.102.110.252 -> 117.102.108.1.
Feb 28 19:33:45 Severity:5 Connection accepted from [fe80::21e:c2ff:feba:4dfe%bridge0]:59985.
Feb 28 19:33:47 Severity:5 Connection accepted from [fe80::21e:c2ff:feba:4dfe%bridge0]:59986.
Feb 28 19:33:47 Severity:5 Connection accepted from [fe80::21e:c2ff:feba:4dfe%bridge0]:59987.
Feb 28 19:34:35 Severity:5 Disassociated with station 00:24:36:8c:5d:2d
Feb 28 19:34:35 Severity:5 Rotated TKIP group key.
Feb 28 19:41:39 Severity:5 Disconnected.
Feb 28 19:41:59 Severity:5 Connection established 117.102.111.0 -> 117.102.108.1.
Feb 28 19:49:59 Severity:5 Disconnected.
Feb 28 19:51:04 Severity:5 Connection established 117.102.111.6 -> 117.102.108.1.
Feb 28 19:51:35 Severity:5 Connection accepted from [fe80::21e:c2ff:feba:4dfe%bridge0]:60270.
Feb 28 19:51:38 Severity:5 Connection accepted from [fe80::21e:c2ff:feba:4dfe%bridge0]:60271.
Feb 28 19:51:38 Severity:5 Connection accepted from [fe80::21e:c2ff:feba:4dfe%bridge0]:60273.
Feb 28 19:56:11 Severity:5 Disconnected.
Feb 28 19:56:17 Severity:5 Connection established 117.102.111.8 -> 117.102.108.1.
Feb 28 19:58:19 Severity:5 Disconnected.
Feb 28 19:58:24 Severity:5 Connection established 117.102.111.9 -> 117.102.108.1.

Hi Aryo Sayogha,
Yup, I have set it on 'Always On'. And it keeps on disconnecting. Ok, I'll ask the ISP then for their regulations.
Thanks for the info because that eliminates one of my questions but lets investigate a little more before contacting your ISP. From looking at you syslog I'm thinking that the AEBS is setup as a Bridge and your ISP Modem is a Gateway. NOTE: All of the information in your syslog are Level 5 Notices and Level 3 Errors.
*O.K. So what is this information about?*
1) Your ISP Modem is a Gateway and doesn't use DHCP to supply IP Address for your Network.
2) A Gateway will only supply 2 IP Address to a single Network Device.
3) A Gateway has a default Route to your ISP Network and it's 117.102.108.1.
4) A Gateway will supply a different IP Address based on their DHCP Lease time or if it's disconnected then reconnected but I think it's not creating all these 117.102.110.248 -> 117.102.108.1 in the syslog.
5) A Gateway will lock on to a MAC Address of a Network Device until it's turned off or looses power. To remove this lock and reset a Gateway, unplug it's connection to your Network Device and turn if off for a few minutes. Then turned it back on and wait until all the light indicators stop flashing before re-connecting it to one of your Network Devices.
6) There're only two MAC Address listed in the syslog; 00:18:f8:34:f7:f9 & 00:24:36:8c:5d:2d so I think they don't match what the Gateway has locked onto.
7) The syslog containing Associated, Deauthenticating, Disassociated, Associated and Installed unicast TKIP key with the MAC Address of 00:18:f8:34:f7:f9 is a Wireless Device renewing the WPA Group Key but this normal.
8) The syslog containing fe80::21e:c2ff:feba:4dfe%bridge0: is using IPv6 for it's IP Address and looks like it's setup as a Bridge and has a MAC Address of 00:24:36:8c:5d:2d so I'm think that the AEBS is setup as a Bridge. This will cause the Gateway to issue a IP Address using DHCP every time one of your Network Devices request a connection and your ISP will eventually notice this plus they may think you're hacking their Network.
I hope I didn't confuse you with all of this because I think there's something not setup properly. Are you having problem you Internet or Local Network?
Let me know and I'll help you fix it.
Later ...
Buzz

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