(In reply to bjoern from comment #0) > With current Firefox however, two sad smileys are displayed. The second smiley comes from a host that had only a IPv6 address, it's the same IPv6 address though that the host of the first sad smiley has, which has an IPv4 and IPv6 address assigned and where the IPv6 address is the same. So Firefox was sending the request for the IPv6-only host to the IPv4 address of the other host that has IPv4 and IPv6 addresses. I can't reproduce this - on an ipv4-only connection, only 1 sad smiley shows up, on both nightly and 99.0 (released earlier this week). Can you reproduce on a clean profile? Can you provide an http log so as to share more details about what is happening, and/or more details about the specifics of how to reproduce this? (see https://firefox-source-docs.mozilla.org/networking/http/logging.html for docs on this)
Bug 1763632 Comment 1 Edit History
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(In reply to bjoern from comment #0) > With current Firefox however, two sad smileys are displayed. The second smiley comes from a host that had only a IPv6 address, it's the same IPv6 address though that the host of the first sad smiley has, which has an IPv4 and IPv6 address assigned and where the IPv6 address is the same. So Firefox was sending the request for the IPv6-only host to the IPv4 address of the other host that has IPv4 and IPv6 addresses. I can't reproduce this - on an ipv4-only connection, only 1 sad smiley shows up, on both nightly and 99.0 (released earlier this week). Can you reproduce on a clean profile? Can you provide an http log so as to share more details about what is happening, and/or more details about the specifics of how to reproduce this? (see https://firefox-source-docs.mozilla.org/networking/http/logging.html for docs on this) (Edit: test site link so other triage folks don't have to search for it: https://ipv6-test.samba.org )