#ipv6only — Public Fediverse posts

@cryptomancer
Many mastodon instances are lacking outgoing #IPv6, they fail to federate with #IPv6only instances.

#IPv4 #Mastodon #IPv6 #Snac2 #IPv4

@cryptomancer
Many mastodon instances are lacking outgoing #IPv6, they fail to federate with #IPv6only instances.

#IPv4 #Mastodon #IPv6 #Snac2 #IPv4

@cryptomancer
Many mastodon instances are lacking outgoing #IPv6, they fail to federate with #IPv6only instances.

#IPv4 #Mastodon #IPv6 #Snac2 #IPv4

@cryptomancer
Many mastodon instances are lacking outgoing #IPv6, they fail to federate with #IPv6only instances.

#IPv4 #Mastodon #IPv6 #Snac2 #IPv4

@cryptomancer
Many mastodon instances are lacking outgoing #IPv6, they fail to federate with #IPv6only instances.

#IPv4 #Mastodon #IPv6 #Snac2 #IPv4

@tschaefer I heard that #FOSDEM will be #IPv6only next time.
Please prepare you app or website.

Thank you @Oskar456 for pursuing and pushing this.

Some statements won't be true anymore within the next three weeks. 🤗

https://pretalx.ripe.net/media/ripe-92/submissions/XJWGCT/resources/RIPE92-May-2026-IPv6_KbCCKtH.pdf

Microsoft announced fixes for their #clat implementation 👍

"We should have a build available to test within 2-3 weeks".

#ipv6only #ipv6 #ripe92

Some statements won't be true anymore within the next three weeks. 🤗

https://pretalx.ripe.net/media/ripe-92/submissions/XJWGCT/resources/RIPE92-May-2026-IPv6_KbCCKtH.pdf

Microsoft announced fixes for their #clat implementation 👍

"We should have a build available to test within 2-3 weeks".

#ipv6only #ipv6 #ripe92

Some statements won't be true anymore within the next three weeks. 🤗

https://pretalx.ripe.net/media/ripe-92/submissions/XJWGCT/resources/RIPE92-May-2026-IPv6_KbCCKtH.pdf

Microsoft announced fixes for their #clat implementation 👍

"We should have a build available to test within 2-3 weeks".

#ipv6only #ipv6 #ripe92

Some statements won't be true anymore within the next three weeks. 🤗

https://pretalx.ripe.net/media/ripe-92/submissions/XJWGCT/resources/RIPE92-May-2026-IPv6_KbCCKtH.pdf

Microsoft announced fixes for their #clat implementation 👍

"We should have a build available to test within 2-3 weeks".

#ipv6only #ipv6 #ripe92

Some statements won't be true anymore within the next three weeks. 🤗

https://pretalx.ripe.net/media/ripe-92/submissions/XJWGCT/resources/RIPE92-May-2026-IPv6_KbCCKtH.pdf

Microsoft announced fixes for their #clat implementation 👍

"We should have a build available to test within 2-3 weeks".

#ipv6only #ipv6 #ripe92

Amazon Lightsail CDN distributions now support IPv6-only instances as origins
Posted on: May 18, 2026

https://aws.amazon.com/about-aws/whats-new/2026/05/amazon-lightsail-cdn-ipv6/

#aws #ipv6 #ipv6only

Amazon Lightsail CDN distributions now support IPv6-only instances as origins
Posted on: May 18, 2026

https://aws.amazon.com/about-aws/whats-new/2026/05/amazon-lightsail-cdn-ipv6/

#aws #ipv6 #ipv6only

Amazon Lightsail CDN distributions now support IPv6-only instances as origins
Posted on: May 18, 2026

https://aws.amazon.com/about-aws/whats-new/2026/05/amazon-lightsail-cdn-ipv6/

#aws #ipv6 #ipv6only

Amazon Lightsail CDN distributions now support IPv6-only instances as origins
Posted on: May 18, 2026

https://aws.amazon.com/about-aws/whats-new/2026/05/amazon-lightsail-cdn-ipv6/

#aws #ipv6 #ipv6only

Amazon Lightsail CDN distributions now support IPv6-only instances as origins
Posted on: May 18, 2026

https://aws.amazon.com/about-aws/whats-new/2026/05/amazon-lightsail-cdn-ipv6/

#aws #ipv6 #ipv6only

same procedure with ee.co.uk:

#ee provides also #ipv6only mobile access

and

#iOS is so smart for doing #ipv6mostly for #hotspot

#ipv6 #internet #ripe92 #edinburgh

same procedure with ee.co.uk:

#ee provides also #ipv6only mobile access

and

#iOS is so smart for doing #ipv6mostly for #hotspot

#ipv6 #internet #ripe92 #edinburgh

same procedure with ee.co.uk:

#ee provides also #ipv6only mobile access

and

#iOS is so smart for doing #ipv6mostly for #hotspot

#ipv6 #internet #ripe92 #edinburgh

same procedure with ee.co.uk:

#ee provides also #ipv6only mobile access

and

#iOS is so smart for doing #ipv6mostly for #hotspot

#ipv6 #internet #ripe92 #edinburgh

same procedure with ee.co.uk:

#ee provides also #ipv6only mobile access

and

#iOS is so smart for doing #ipv6mostly for #hotspot

#ipv6 #internet #ripe92 #edinburgh

@tschaefer
Native, not roaming, correct?

#ee #ipv6only #ipv6 #ripe92

@tschaefer
Native, not roaming, correct?

#ee #ipv6only #ipv6 #ripe92

@tschaefer
Native, not roaming, correct?

#ee #ipv6only #ipv6 #ripe92

#ee has #ipv6only 🤓

#ipv6 #ripe92

#ee has #ipv6only 🤓

#ipv6 #ripe92

#ee has #ipv6only 🤓

#ipv6 #ripe92

#ee has #ipv6only 🤓

#ipv6 #ripe92

#ee has #ipv6only 🤓

#ipv6 #ripe92

o2 (de):

roaming works with #ipv6 in UK with o2 (uk)

MTU is 1500

Dualstack is provided at home and during roaming.
#IPv6only (really only, no NAT64, no DNS64) is also working at home as well during roaming in UK.

o2 (de):

roaming works with #ipv6 in UK with o2 (uk)

MTU is 1500

Dualstack is provided at home and during roaming.
#IPv6only (really only, no NAT64, no DNS64) is also working at home as well during roaming in UK.

o2 (de):

roaming works with #ipv6 in UK with o2 (uk)

MTU is 1500

Dualstack is provided at home and during roaming.
#IPv6only (really only, no NAT64, no DNS64) is also working at home as well during roaming in UK.

o2 (de):

roaming works with #ipv6 in UK with o2 (uk)

MTU is 1500

Dualstack is provided at home and during roaming.
#IPv6only (really only, no NAT64, no DNS64) is also working at home as well during roaming in UK.

o2 (de):

roaming works with #ipv6 in UK with o2 (uk)

MTU is 1500

Dualstack is provided at home and during roaming.
#IPv6only (really only, no NAT64, no DNS64) is also working at home as well during roaming in UK.

Deutsche Telekom:
#roaming works with #ipv6 in #uk with ee, o2 and vodafone
MTU is lower (1440) than at home(1500).

(The #IPv6only mode (standard at home) is still not supported)

#ripe92 #edinburgh

Deutsche Telekom:
#roaming works with #ipv6 in #uk with ee, o2 and vodafone
MTU is lower (1440) than at home(1500).

(The #IPv6only mode (standard at home) is still not supported)

#ripe92 #edinburgh

Deutsche Telekom:
#roaming works with #ipv6 in #uk with ee, o2 and vodafone
MTU is lower (1440) than at home(1500).

(The #IPv6only mode (standard at home) is still not supported)

#ripe92 #edinburgh

Deutsche Telekom:
#roaming works with #ipv6 in #uk with ee, o2 and vodafone
MTU is lower (1440) than at home(1500).

(The #IPv6only mode (standard at home) is still not supported)

#ripe92 #edinburgh

Deutsche Telekom:
#roaming works with #ipv6 in #uk with ee, o2 and vodafone
MTU is lower (1440) than at home(1500).

(The #IPv6only mode (standard at home) is still not supported)

#ripe92 #edinburgh

IPv6 CIDR routes for Cloudflare Mesh
May 06, 2026

https://developers.cloudflare.com/changelog/post/2026-05-06-mesh-ipv6-routes/

#ipv6 #ipv6only

IPv6 CIDR routes for Cloudflare Mesh
May 06, 2026

https://developers.cloudflare.com/changelog/post/2026-05-06-mesh-ipv6-routes/

#ipv6 #ipv6only

IPv6 CIDR routes for Cloudflare Mesh
May 06, 2026

https://developers.cloudflare.com/changelog/post/2026-05-06-mesh-ipv6-routes/

#ipv6 #ipv6only

IPv6 CIDR routes for Cloudflare Mesh
May 06, 2026

https://developers.cloudflare.com/changelog/post/2026-05-06-mesh-ipv6-routes/

#ipv6 #ipv6only

IPv6 CIDR routes for Cloudflare Mesh
May 06, 2026

https://developers.cloudflare.com/changelog/post/2026-05-06-mesh-ipv6-routes/

#ipv6 #ipv6only

https://docs.qualys.com/en/scanner/onboarding/virtual_scanner/configuration/enable_ipv6-only_mode.htm

Would love to see more of it.
#ipv6 #ipv6only

https://docs.qualys.com/en/scanner/onboarding/virtual_scanner/configuration/enable_ipv6-only_mode.htm

Would love to see more of it.
#ipv6 #ipv6only

https://docs.qualys.com/en/scanner/onboarding/virtual_scanner/configuration/enable_ipv6-only_mode.htm

Would love to see more of it.
#ipv6 #ipv6only

https://docs.qualys.com/en/scanner/onboarding/virtual_scanner/configuration/enable_ipv6-only_mode.htm

Would love to see more of it.
#ipv6 #ipv6only

https://docs.qualys.com/en/scanner/onboarding/virtual_scanner/configuration/enable_ipv6-only_mode.htm

Would love to see more of it.
#ipv6 #ipv6only

Interesting and surprising corner-case discovered by @phils when debugging an issue with IPv6-only DNS recursive resolvers:

https://mailarchive.ietf.org/arch/msg/dnsop/rAbaKS5YD0iYuIg9xOPt0s7HJCg/

In-particular, it is important to have both A and AAAA records on all of the nameserver names (ie, that NS records point to). Just having two of each isn't enough -- the number of names without AAAA records is also a consideration.

Unbound's defenses for CVE-2020-12662 can otherwise kick in and result in SERVFAILs in some corner-cases.

#IPv6 #IPv6only #DNS