It started flowing shortly after I sent the initial message... Thanks to all who answered.
Mike Tancsa <mailto:mike@sentex.net> June 1, 2013 9:43 PM
Looks ok for me via Toronto, Ont, Canada
0(marble)% host imap.gmail.com imap.gmail.com is an alias for gmail-imap.l.google.com. gmail-imap.l.google.com has address 74.125.142.108 gmail-imap.l.google.com has address 74.125.142.109 gmail-imap.l.google.com has IPv6 address 2607:f8b0:4003:c01::6c 0(marble)%
% traceroute6 -q1 2607:f8b0:4003:c01::6c traceroute6 to 2607:f8b0:4003:c01::6c (2607:f8b0:4003:c01::6c) from 2607:f3e0::2, 64 hops max, 12 byte packets 1 iolite4-6 0.560 ms 2 toronto-torix-6 4.678 ms 3 he.ip6.torontointernetxchange.net 3.793 ms 4 2001:478:245:1::6 5.810 ms 5 2001:4860::1:0:e38 3.471 ms 6 2001:4860::8:0:2fe9 16.342 ms 7 2001:4860::8:0:29ee 31.341 ms 8 2001:4860::2:0:95e 31.340 ms 9 * 10 ob-in-x6c.1e100.net 30.584 ms
1(marble)% openssl s_client -host imap.gmail.com -port 993 CONNECTED(00000003) depth=1 /C=US/O=Google Inc/CN=Google Internet Authority verify error:num=20:unable to get local issuer certificate verify return:0 --- Certificate chain 0 s:/C=US/ST=California/L=Mountain View/O=Google Inc/CN=imap.gmail.com i:/C=US/O=Google Inc/CN=Google Internet Authority 1 s:/C=US/O=Google Inc/CN=Google Internet Authority i:/C=US/O=Equifax/OU=Equifax Secure Certificate Authority --- Server certificate -----BEGIN CERTIFICATE----- MIIDgDCCAumgAwIBAgIKVEsbtQABAACELjANBgkqhkiG9w0BAQUFADBGMQswCQYD VQQGEwJVUzETMBEGA1UEChMKR29vZ2xlIEluYzEiMCAGA1UEAxMZR29vZ2xlIElu dGVybmV0IEF1dGhvcml0eTAeFw0xMzA0MTUwODQ0MDBaFw0xMzEyMzExNTU4NTBa MGgxCzAJBgNVBAYTAlVTMRMwEQYDVQQIEwpDYWxpZm9ybmlhMRYwFAYDVQQHEw1N b3VudGFpbiBWaWV3MRMwEQYDVQQKEwpHb29nbGUgSW5jMRcwFQYDVQQDEw5pbWFw LmdtYWlsLmNvbTCBnzANBgkqhkiG9w0BAQEFAAOBjQAwgYkCgYEA3a/wUjZBSOgZ EeyRqaSaKEwS8+1y/8AK9HdplSR72PU+iBc7HyA4aXgD6XYEJVoyGsO97nMj+oeN 2iNvKfkPvTrn2YnQfJLuxpEw9gwIHvwVqy3TNpHwt4DHnxOg5CxV8e7PaCAhAXD+ uj0H09aVFJmfYDnU0VSSukNJX2MZSJUCAwEAAaOCAVEwggFNMB0GA1UdJQQWMBQG CCsGAQUFBwMBBggrBgEFBQcDAjAdBgNVHQ4EFgQUY9A6EExy3NNFBc2R0vrY8lpf OB8wHwYDVR0jBBgwFoAUv8Aw6/VDET5nup6R+/xq2uNrEiQwWwYDVR0fBFQwUjBQ oE6gTIZKaHR0cDovL3d3dy5nc3RhdGljLmNvbS9Hb29nbGVJbnRlcm5ldEF1dGhv cml0eS9Hb29nbGVJbnRlcm5ldEF1dGhvcml0eS5jcmwwZgYIKwYBBQUHAQEEWjBY MFYGCCsGAQUFBzAChkpodHRwOi8vd3d3LmdzdGF0aWMuY29tL0dvb2dsZUludGVy bmV0QXV0aG9yaXR5L0dvb2dsZUludGVybmV0QXV0aG9yaXR5LmNydDAMBgNVHRMB Af8EAjAAMBkGA1UdEQQSMBCCDmltYXAuZ21haWwuY29tMA0GCSqGSIb3DQEBBQUA A4GBAAcrDCcXCKZ2VNcJv31SSXTKs1AH0sU1lvAB0kzy3mIB/H8UHvMz1+T3Lfmy 68bqBSM97W6MO6UiqmVvbMhwPBrktUVT/Q4cWskVf2MONrW3g0UtX47L1ocs/WZe XdUTkjQ3EFCzxpw4joHefndfZHsEn0VrjZR49kzR9+1Me7Rz -----END CERTIFICATE----- subject=/C=US/ST=California/L=Mountain View/O=Google Inc/CN=imap.gmail.com issuer=/C=US/O=Google Inc/CN=Google Internet Authority --- No client certificate CA names sent --- SSL handshake has read 1752 bytes and written 325 bytes --- New, TLSv1/SSLv3, Cipher is RC4-SHA Server public key is 1024 bit Secure Renegotiation IS supported Compression: NONE Expansion: NONE SSL-Session: Protocol : TLSv1 Cipher : RC4-SHA Session-ID: 881124D0017ADA0B7D8CEB26ECBCBCF86AF8A593600858D165164A17B2C0C652 Session-ID-ctx: Master-Key: 667BDFF99C7FE7733C8CB36FE2F73C76380DE2AC9453A0D3D621E39CE64EC1259BC8AB8FE65C425E15BCA467B80FD274 Key-Arg : None Start Time: 1370137039 Timeout : 300 (sec) Verify return code: 20 (unable to get local issuer certificate) --- * OK Gimap ready for requests from 199.212.134.2 bj1if1491559oac.162 ^C 1(marble)% Stevens, Brant I. <mailto:branto@argentiumsolutions.com> June 1, 2013 1:53 PM Is anyone else having issues reaching GMail on IPv6 via IMAP, or is it just me?
Here's some of what I'm seeing:
It responds to ping...
imac01:~ branto$ ping6 imap.gmail.com PING6(56=40+8+8 bytes) 2001:470:8d30:b00c::bb0e --> 2607:f8b0:400d:c00::6c 16 bytes from 2607:f8b0:400d:c00::6c, icmp_seq=0 hlim=55 time=31.299 ms 16 bytes from 2607:f8b0:400d:c00::6c, icmp_seq=1 hlim=55 time=41.528 ms 16 bytes from 2607:f8b0:400d:c00::6c, icmp_seq=2 hlim=55 time=30.092 ms 16 bytes from 2607:f8b0:400d:c00::6c, icmp_seq=3 hlim=55 time=35.450 ms ^C --- gmail-imap.l.google.com ping6 statistics --- 4 packets transmitted, 4 packets received, 0.0% packet loss round-trip min/avg/max/std-dev = 30.092/34.592/41.528/4.470 ms
TCP Sessions on v6 seem to time-out:
imac01:~ branto$ telnet -6 imap.gmail.com 993 Trying 2607:f8b0:400d:c01::6c... telnet: connect to address 2607:f8b0:400d:c01::6c: Operation timed out telnet: Unable to connect to remote host
IPv4 Connects:
imac01:~ branto$ telnet -4 imap.gmail.com 993 Trying 173.194.76.108... Connected to gmail-imap.l.google.com. Escape character is '^]'.
^] telnet> close Connection closed.
and other connectivity via IPv6 works:
imac01:~ branto$ telnet -6 www.google.com 80 Trying 2607:f8b0:400c:c04::68... Connected to www.google.com. Escape character is '^]'.
GET / HTTP/1.0 200 OK Date: Sat, 01 Jun 2013 17:08:58 GMT
<snip>
Connection closed by foreign host.
I've tried flushing my dnscache to make sure I'm not holding on to something that's not valid, but no dice.
-Brant