Primary IPv6: error

INFO: OS: darwin

INFO: GOARCH: arm64

INFO: GOOS: darwin

INFO: NEXTDNS_BIN: /usr/local/bin/nextdns

INFO: INSTALL_RELEASE: 1.43.4

On Ping.nextdns.io my issue clearer to see:

  gsl-mel                   6 ms  (ultralow1)

  vultr-mel                 6 ms  (anycast2, ultralow2)

■ vultr-mel (IPv6)          7 ms  (anycast2, ultralow2)

  zetta-adl                15 ms

  gsl-syd                  16 ms

  vultr-syd (IPv6)         19 ms  (anycast1)

  vultr-syd                19 ms  (anycast1)

  zetta-syd                19 ms

  zetta-syd (IPv6)         20 ms

  anexia-bne               33 ms

  anexia-bne (IPv6)        33 ms

  zetta-bne                36 ms

  anexia-per               43 ms

  anexia-per (IPv6)        44 ms

  zetta-per                44 ms

  zetta-per (IPv6)         44 ms

  gsl-mel (IPv6)           error

  gsl-syd (IPv6)           error

dns1.nextdns.io (IPv6) error (ultralow1)

This is after updating the CLI to 1.43.4 https://nextdns.io/diag/d466d4a0-18b9-11ef-8187-f59ec123466e

Thanks for looking into this, I've ran this test since your response:
https://nextdns.io/diag/78413530-1c9c-11ef-93c1-27dc91f4f48f
And ffter receiving a tip from a local friend to ask my provider Superloop to disable CGNAT problem seems to have gone away: https://nextdns.io/diag/78413530-1c9c-11ef-93c1-27dc91f4f48f