IPv6 on VoLTE

[解为庆]

抱歉，我不懂英文，如能译成中文，万分感谢！

发自我的 iPhone

> 在 2018年11月8日，上午10:44，Mikael Abrahamsson <swmike at swm.pp.se> 写道：
> 
>> On Wed, 7 Nov 2018, Anurag Bhatia wrote:
>> 
>> I recently got VoLTE from my provider (AS9498). I noticed that after
>> VoLTE is enabled, device is creating two IPsec tunnels and also has
>> IPv6 address on those IPsec tunnels.
>> 
>> Was wondering if someone can point me to any paper/documentation on
>> how VoLTE works and how this IPv6 over ipsec works in the background?
> 
> https://en.wikipedia.org/wiki/Voice_over_LTE , there should be links to the 3GPP specifications.
> 
> I have not heard of VoLTE using IPSEC, that's not how it was supposed to work at least when I looked into this 5 years ago. Instead it should have additional bearer on mobile interface to handle this traffic.
> 
> How are you identifying this as IPSEC tunnels? What kind of device is it you're looking at?
> 
> -- 
> Mikael Abrahamsson    email: swmike at swm.pp.se