High latency with Viettel (Vietnam) network operator
All anycast servers (including IPv4 and IPv6) have very high latency. Please check it out!
Also, ultralow server 1 (anexia-han) sometimes gives high latency (about 60ms)
Diag: https://nextdns.io/diag/0d103990-a4d1-11ec-907c-51b8b8dfe5fd
greencloud-han (IPv6) 34 ms
■ greencloud-han 37 ms (ultralow2)
vultr-sin 50 ms
anexia-han 65 ms (ultralow1)
anexia-sin (IPv6) 65 ms
premiumrdp-bkk 68 ms
anexia-sin 75 ms
bangmod-bkk 76 ms
zepto-sin (IPv6) 98 ms
zepto-sin 128 ms
vultr-sin (IPv6) 152 ms
vultr-syd 159 ms (anycast2)
zepto-fra 163 ms (anycast1)
gsl-sin 202 ms
anexia-dxb (IPv6) 228 ms (anycast1)
anexia-ams (IPv6) 231 ms (anycast2)
thegigabit-kul 232 ms
gsl-sin (IPv6) 264 ms
premiumrdp-kul 385 ms
dns1.nextdns.io (IPv6) error (ultralow1)
dns2.nextdns.io (IPv6) error (ultralow2)
P/s: Currently, carriers in Vietnam are starting to deploy by default IPv6 for modems (cable networks) and devices (4G networks). When an IPv6 connection is available, the device automatically switches to an IPv6 anycast server with high latency, greatly slowing down the speed. Please check this out! Thank you!
Update: Ping image from my 2 devices, iPhone running iOS 13 still using VPN, connection to IPv6 anycast server has very high latency.
1 reply
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Looks like routing is back as it was, however anycast1 still routes to europe.
anexia-hkg 42 ms (anycast2) ■ greencloud-han 43 ms (ultralow2) anexia-han 45 ms (ultralow1) vultr-sin 52 ms gsl-sin 62 ms zepto-sin 62 ms bangmod-bkk 69 ms anexia-sin 71 ms premiumrdp-kul 87 ms premiumrdp-bkk 91 ms thegigabit-kul 93 ms zepto-fra 179 ms (anycast1)
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