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by metildaa
2845 days ago
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All of the 4 major LTE cellular carriers operate IPv6 only networks with NATed IPv4 access tunneled in as an unsupported afterthought. Having done quite a bit of testing with IPv6 enabled VOIP for inbound calls as compared to FCM with calls coming from an IPv4 only server, only the former setup would reliably get calls to my device on the first ring. |
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