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using a mifi, how often should one expect their public IP to change?

Does Verizon use Carrier Grade NAT? Is there a proxy that I'd expect a pool of IP's to cycle from?

I've seen 10+ changes this hour, who knows how many today. It's breaking TCP sessions all the time (eg, SSH, TCP VPN's). This is new behavior, in the last day or two. No other changes on my end.

logs from my 4620L mifi... I'm not sure what they look like when good, so can't compare... but the HDR/EvDO disconnect/connect messages look bad...??
(would each cycle mean a new IP?)

WWAN Log> HTML Version 31.

04/28/14 12:46:24> Current Time

04/28/14 12:44:40> First opening Index.html

04/28/14 12:42:09> NWPM_EVENT_CALL_CONNECTED

04/28/14 12:42:09> [WiFi] update max station counter

04/28/14 12:42:09> HDR/EvDO Connected

04/28/14 12:41:57> NWPM_EVENT_CALL_END

04/28/14 12:41:57> [WiFi] update max station counter

04/28/14 12:41:57> HDR/EvDO Disconnected

04/28/14 12:41:57> [RUIAUTO] Invalid packet state

04/28/14 12:29:06> NWPM_EVENT_CALL_CONNECTED

04/28/14 12:29:06> [WiFi] update max station counter

04/28/14 12:29:06> HDR/EvDO Connected

04/28/14 12:28:56> NWPM_EVENT_CALL_END

04/28/14 12:28:55> [WiFi] update max station counter

04/28/14 12:28:55> HDR/EvDO Disconnected

04/28/14 12:28:55> [RUIAUTO] Invalid packet state

04/28/14 12:28:54> HDR/EvDO in Dormant State

04/28/14 12:22:13> NWPM_EVENT_CALL_CONNECTED

04/28/14 12:22:13> [WiFi] update max station counter

04/28/14 12:22:13> HDR/EvDO Connected

04/28/14 12:22:01> NWPM_EVENT_CALL_END

04/28/14 12:22:01> [WiFi] update max station counter

04/28/14 12:22:01> HDR/EvDO Disconnected

04/28/14 12:22:01> [RUIAUTO] Invalid packet state

04/28/14 12:07:30> NWPM_EVENT_CALL_CONNECTED

04/28/14 12:07:30> [WiFi] update max station counter

04/28/14 12:07:30> HDR/EvDO Connected

04/28/14 12:07:19> NWPM_EVENT_CALL_END

04/28/14 12:07:19> [WiFi] update max station counter

04/28/14 12:07:19> HDR/EvDO Disconnected

04/28/14 12:07:19> [RUIAUTO] Invalid packet state

04/28/14 12:07:18> HDR/EvDO in Dormant State

04/28/14 11:58:24> NWPM_EVENT_CALL_CONNECTED

04/28/14 11:58:24> [WiFi] update max station counter

04/28/14 11:58:24> HDR/EvDO Connected

04/28/14 11:58:14> NWPM_EVENT_CALL_END

04/28/14 11:58:14> [WiFi] update max station counter

04/28/14 11:58:14> HDR/EvDO Disconnected

04/28/14 11:58:13> [RUIAUTO] Invalid packet state

04/28/14 11:58:12> HDR/EvDO in Dormant State

04/28/14 11:43:59> NWPM_EVENT_CALL_CONNECTED

04/28/14 11:43:59> [WiFi] update max station counter

04/28/14 11:43:59> HDR/EvDO Connected

04/28/14 11:43:48> NWPM_EVENT_CALL_END

04/28/14 11:43:48> [WiFi] update max station counter

04/28/14 11:43:48> HDR/EvDO Disconnected

04/28/14 11:43:48> [RUIAUTO] Invalid packet state

04/28/14 11:43:47> HDR/EvDO in Dormant State

04/28/14 11:37:18> NWPM_EVENT_CALL_CONNECTED

04/28/14 11:37:18> [WiFi] update max station counter

04/28/14 11:37:18> HDR/EvDO Connected

04/28/14 11:37:07> NWPM_EVENT_CALL_END

04/28/14 11:37:07> [WiFi] update max station counter

04/28/14 11:37:06> HDR/EvDO Disconnected

04/28/14 11:37:06> [RUIAUTO] Invalid packet state

04/28/14 11:37:05> HDR/EvDO in Dormant State

04/28/14 11:28:26> [WiFi] update max station counter

04/28/14 11:28:26> NWPM_EVENT_CALL_CONNECTED

04/28/14 11:28:26> HDR/EvDO Connected

04/28/14 11:28:15> NWPM_EVENT_CALL_END

04/28/14 11:28:15> [WiFi] update max station counter

04/28/14 11:28:15> HDR/EvDO Disconnected

04/28/14 11:28:15> [RUIAUTO] Invalid packet state

04/28/14 11:28:14> HDR/EvDO in Dormant State

04/28/14 11:11:13> [WiFi] update max station counter

04/28/14 11:11:13> NWPM_EVENT_CALL_CONNECTED

04/28/14 11:11:13> HDR/EvDO Connected

04/28/14 11:11:02> NWPM_EVENT_CALL_END

04/28/14 11:11:02> [WiFi] update max station counter

04/28/14 11:11:02> HDR/EvDO Disconnected

04/28/14 11:11:02> [RUIAUTO] Invalid packet state

04/28/14 11:11:00> HDR/EvDO in Dormant State

04/28/14 11:10:05> NWPM_EVENT_BATT_TEMP_STOP_CHG

04/28/14 11:01:13> NWPM_EVENT_UI_BUTTON_PRESS

04/28/14 10:54:50> NWPM_EVENT_CALL_CONNECTED

04/28/14 10:54:50> [WiFi] update max station counter

04/28/14 10:54:50> HDR/EvDO Connected

04/28/14 10:54:39> NWPM_EVENT_CALL_END

04/28/14 10:54:39> [WiFi] update max station counter

04/28/14 10:54:39> HDR/EvDO Disconnected

04/28/14 10:54:39> [RUIAUTO] Invalid packet state

04/28/14 10:49:49> [WiFi] update max station counter

04/28/14 10:49:49> NWPM_EVENT_CALL_CONNECTED

04/28/14 10:49:49> HDR/EvDO Connected

04/28/14 10:49:38> NWPM_EVENT_CALL_END

04/28/14 10:49:38> [WiFi] update max station counter

04/28/14 10:49:38> HDR/EvDO Disconnected

04/28/14 10:49:38> [RUIAUTO] Invalid packet state

04/28/14 10:43:33> NWPM_EVENT_CALL_CONNECTED

04/28/14 10:43:33> [WiFi] update max station counter

04/28/14 10:43:33> HDR/EvDO Connected

04/28/14 10:43:22> NWPM_EVENT_CALL_END

04/28/14 10:43:22> [WiFi] update max station counter

04/28/14 10:43:22> HDR/EvDO Disconnected

04/28/14 10:43:22> [RUIAUTO] Invalid packet state

04/28/14 10:43:21> HDR/EvDO in Dormant State

Comments

Ann154

Unless you paid for a public IP address, you aren't getting a public IP address with a mifi device. You have a private IP address behind the NAT used by Verizon Wireless.

Shawn3B

Thanks for the reply, but it's not helping me as to *why* my public IP is changing so often. This cannot be the norm/acceptable, at least not for established TCP connections? I'm fairly new to mobile data, at least mifi based usage. Nothing changed on my end, and I don't know how to reach out to tech support - they are confused when I tried.

My VPN's, SSH, SSL sessions all reset when my IP changes - multiple times per hour (and this is only started in the last day or two). I understand I am probably getting a fairly random private IP internally, but my public IP's (as listed in the original message) keep changing - which is the point.

Say I want a public IP for my prepaid mifi, is that possible?

NAT isn't the problem per se though, it had been working for weeks without issue.

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